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Welcome! is operated by the publishing house Les éditions à deux balles (leadb) to distribute the texts and music of the artists in its catalogue. The name of the website is chosen in reference to its first publication, Surf Xi’s Data-driving trilogy, whose principles leadb tries to put into practice for its own activities.

If you have already browsed this page, you can use the site menu to access the shopping pages.

LET’S PROTECT OUR USAGE-DATA BY DEFAULT! is designed to demonstrate that a shopping site can seek to protect the interests of its users, by default, including protecting the privacy of all their usage data.

Surf Xi

We have not set ourselves this objective because it is a legal obligation, but because we have adopted the approach proposed by Surf Xi in its Data-driving trilogy.


You can leave a comment at the bottom of this page if you wish to contribute to its improvement.

The administrator of

3 tips to protect your interests when using this site

– Do not continue your visit if you do not accept that the IP address with which you are connecting is used by the technical services of the host to secure the site and produce anonymous audience statistics.

– You do not need to ask your browser to accept cookies, unless you wish to purchase items offered for sale on this site or if you wish to post a comment by-signing-with-a-pseudonym or by-joining-an-email-to-becontacted-by-the-publisher (the email will not be visible to other visitors)

– If you have any questions, you can contact the publisher whos directions are given further on in this page (Les éditions à deux

3 suggestions for better protecting your interests

– If you would like to know more about the site’s host, their contact details are given further down this page (Infomaniak)

– If you have less than 3 minutes, at least read the following paragraph headings: they give the minimum information necessary to understand which of your usage data is used by the site and in what circumstances.

– If you have a few more minutes (less than 10 minutes), read at least the paragraphs that seem most important to you and if necessary ask your questions in the form of comments.

Important information before continuing!

Our IP address is used and stored by the programs on this site from the moment our web browser connects to it.

If you do not accept this, which you understand and respect, the Site Manager advises you not to continue your visit.

The Site Manager is not in a position to erase the trace of IP addresses stored in the site’s database on request. There are many reasons why it would not be able to do so if it wished to do so, and it does not wish to do so, as this would require deliberately associating an IP address with the personal details of the person making such a request.

However, in an attempt to protect the anonymity of visitors to the website by default, the Site Manager refuses to attempt to associate an IP address with a civilian identifier (other than his own IP address, which he recognises as a matter of habit from his work administering the website).

For those who choose to continue visiting the site, please see Protecting our anonymity by default for more information on the actual use of IP addresses by the computer programs that help run the site.

To contact the Manager, owner, editor and publisher of the site

Company name, address, contact details and French enterprise identifier (SIRET) of the publisher and person responsible for the publication of the website:

The enterprise Les éditions à deux balles can be reached by phone on the number indicated above from Monday to Friday between 8.30 am and 7.30 pm (France time). Its website is

To contact the website host

Details of the company hosting the website:

Contact for Infomaniak support in English:

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source: Footer of the Infomaniak websiteas de page du site Infomaniak

It is possible to use the site with a browser that blocks cookies

On this site, only the functionalities linked to the purchase (payment of an article or an order with a bank payment card, consultation of the purchase BASKET, CHECKOUT to validate an ORDER) require the use of cookies.

It is therefore possible to use the site with a browser that blocks all cookies (this setting can be accessed in the web browser’s Preferences), either for a simple visit of curiosity, or to post an opinion, comment or ask questions about an article…

Caution: if we want to purchase the E-BOOKS and SOUNDBANDS sold on this site, our web browser must be set to allow cookies

The cookies necessary for the operation of the Online SHOP are described in the following section.

To validate an order, the ONLINE SHOP requires an email address

An online SHOP is integrated into the website via a WooCommerce plugin (cf. page Woocommerce on Wikipedia), developed by the American company Automattic (cf. page Automattic on Wikipedia). This company is founded by major contributors to WordPress, the free-and-open-source application with which this website’s content and services are produced and administered(cf. WordPress on Wikipedia).

To validate an ORDER (purchase an item) on the website, the ONLINE SHOP asks you to enter an email address which will be used to send a message containing a download link for each item in the order (delivery address) as well as an invoice for each order (the same email address is used as the invoicing address and must therefore appear on the invoice).

The delivery address allows the person ordering to download their purchases later, in case they do not want to or cannot do so immediately after paying. As such, the site manager has chosen to keep this delivery email address for one year in the site’s order database, so that each person who buys on the site has a sufficient period of time to download their purchases.

Once the order has been fulfilled (paid online and then delivered and invoiced by email), the email, as the delivery address, can be deleted immediately from the order database and from the Site Manager’s mailbox, if the person to whom it belongs so requests. It is sufficient to send an email in this sense to the address from which the download+invoice email comes after the validation of the order (in this case it would be logical to also ask for the deletion of the email of the request, after the execution of the latter…).

The email address, as the billing address, is kept by the site editor in a secure archive of invoices, for a period of 10 years, in accordance with the French Commercial Code. The billing email address associated with each invoice will not be deleted, even if the purchaser requests it. Once the 10 year period has elapsed, the invoice will no longer appear in the invoice database, thus removing all trace of the invoice email from the databases associated with the site.

Apart from the Site Manager, no one is allowed to see the email addresses corresponding to orders placed on the site. They are stored, along with the ORDERS to which they correspond, in the database of orders placed on the site. This database is encrypted, stored and archived on the servers of the site host (in Switzerland). The Site Manager also backs up this database at a secret location (in France). The Site Manager has an archive and a backup of the invoice database (in France), the information of which is only accessible by him and, if necessary, by the French administrative services that are legitimate to request it (tax agents, for example).

The ONLINE SHOP stores some of our usage data in three cookie files

As soon as a web browser connects to the website, the WooCommerce plugin creates a session cookie file, in which it stores the following information (source: WooCommerce).

  • The references of the items for sale consulted on the site. This information is not used by the site.
  • The country, IP address and browser type from which the connection to the site is made: the WooCommerce plugin plans to use this information to verify the address information transmitted in the case of purchases of physical products, which is not necessary for the site, whose shop only needs an email address so that it can send an order summary and a download link when the order is paid. The WooCommerce plugin does not currently provide for the collection of a billing address or a delivery address because the site currently sells an e-book and its soundtrack, delivered only as a download and for which VAT is not applicable, by virtue of article 293 B of the CGI (France). Woocommerce is therefore set up so as not to unnecessarily request this physical address information.

After creating the session cookie file, the Woommerce plugin (i.e. the Online SHOP) asks the web browser to store it on the machine (computer, tablet, smartphone) from which the connection originates.

If the browser blocks cookies, these files are not copied. The person visiting the site can continue to visit the site without buying anything.

If the browser is set to accept cookies, the Woocommerce session cookie is copied to the machine from which the connection originates with a deletion date of +2 days from the moment it is copied, the browser taking care of deleting the cookies whose deletion date has passed.

As soon as a person feeds their shopping CART with one of the items sold on the Online SHOP, the WooCommerce plugin creates two basket cookie files an illustrated description of which can be seen by clicking on the link above. These cookies are memorised on the machine from which the visit originates, via its web browser (since it is assumed in this section that it does not block cookies). They memorise the contents of the basket during the browsing session on the site and are deleted as soon as the browser leaves the site (if the connection to the site takes place in a specific tab of the browser, the active page of this tab must be connected to another site, or the tab must be closed, in order to end the session on

The site accepts anonymous comments (published after curation)

The editor of recommends posting comments anonymously, or pseudo-anonymously (under a pseudonym).

WordPress remembers our comments, associating them with the IP addresses of the machines from which they were entered.

The Site Manager does not use these IP addresses to try to deduce the civil identity of the commenters (apart from his own address, which he recognises by habit), but he can see them in his curation interface.

The curation of comments is necessary to avoid pollution of the site, for example by malicious programs that seek to place advertisements in the place of comments. Curation is not intended to censor users’ comments. The curator essentially ensures that comments do not contain any civil information (e.g. family name, address, etc.) and no offensive text. The curator also checks that comments are used for the right purpose (not as advertisements for example).

The site allows you to add an author’s name and/or email/web address to a comment

It is possible to optionally associate an author name and/or an email/web address when posting a comment on the site.

In this case, the site editor recommends using a pseudonym, so as to remain pseudo-anonymous. It is therefore recommended that people who wish to associate an author name with their comments and opinions do not use a civil identifier (neither their own nor that of someone else) in the author name they wish to associate with a comment.

The curator will have to refuse a comment if he or she considers that its content may harm the reputation of a person whose civil name appears either in the text of the comment or as the name of the author of the comment. As it is forbidden to carry out a search to try to identify the civil name of the author of a comment, in case of doubt the comment will simply not be validated.

When an author’s name is associated with a comment, it is intended to be published on the site, opposite the comment.

When an email address is associated with a comment, it is not published on the site. The email address is used to allow an exchange between the person who writes the comment and the site editor-curator. The editor-curator of the site recommends that commenters only enter an email address when they wish to communicate directly with him.

An author’s name or email address is not used as a personal identifier that would mechanically attribute ownership of comments to a civilian. The author’s name is used to express that the people who comment on the site are human beings (not machines). The email address is a way for the commenter to communicate directly with the editor-curator of the site.

The editor recommends that you use an email address that does not contain a civil identifier. An email address that refers to an author’s pseudonym would be ideal. The address must nevertheless be valid and accessible to the person posting the comment.

In the curation interface used by the site editor, each comment posted is associated with the IP address (connection identifier) of the machine from which the comment was posted. If the person associates a name and/or an email/web address with the comment, this information will appear in the curation interface together with their IP address! An illustration of this interface is given in the article Protecting our anonymity by default.

It is therefore possible to systematically associate our author pseudonym with each of our comments, if our browser accepts cookies

Below the dialog box for entering a comment (e.g., at the end of the article Protecting our anonymity by default ), there is a checkbox to request that the nickname (and email address) we provide be stored. If we check this box, the nickname (and possibly the email address) we optionally enter is stored in three WordPress cookie files (comment_author, comment_author_email and comment_author_url). These files are stored on the machine from which we access the site (if our browser does not disallow cookies). This allows us to automatically associate our author pseudonym with future comments.

The site editor recommends that you do not save your email address and that you only enter it in exceptional cases when you wish to be contacted by email.

This facility only works if cookies are allowed by our browsers.

The information stored in these three cookies is visible in the clear in the cookie management interface of the Chrome browser! All the more reason to use a pseudonym and an email address that does not contain a civilian name. The lifetime of these cookies is slightly less than one year.

To request the removal of information that we ourselves have posted on the site

Author information (pseudonym, email address) that is stored in WordPress author cookies can be removed by users themselves using their browser preferences.

To have a comment posted (or even all comments posted) removed, the site administrator suggests posting your request as an anonymous comment, attached for example to the last article for which you posted a comment and making sure to associate it with the same email address as the other comments.

An example is given in the article Protecting our anonymity by default.

The administrator will then contact the person who posted the request at the address given, to check that the request is legitimate, and then proceed to delete the comments associated with that address. These comments will be deleted including in the comments management interface, visible only to the people in charge of curating the site. The deletion of comments will be done in principle one working day after the legitimacy of the request has been validated.

Comments will be removed from the backup within one month of their removal from the site.

For the moment it is not possible to open an account on this site

This is a choice made by the Site Manager, because this site is not intended to collect and store information about these users. This choice could change in the future if users request it.

Co-build the contents of this page or of the website?

If you post a comment, the publisher and the author will use it to enrich this page. If you want to sign your comments, please use a pseudo! Specify an email only if you want to receive a private answer (e.g. to book your pseudo). The email won't be published.