The Working Party is an independent European advisory board on data protection and privacy. Some of the Party's recommendations are not out of the blue: making users very aware of how their data is being used; more secure default settings; deleting all a user's account data immediately after they cancel their account, etc.
Others, however, are less expected.
For example, the Party recommends that SNS should allow users to adopt a pseudonym. Although rarely enforced, one of Facebook's terms of service is that user's must use their real name. (I'll give Facebook this: Last year I found users named "Fake Name," "Faketh Nameth," and "Betsy Faken Namer," to name a few. I did not, however, find any such people in my Facebook people search today.)
The Party's rationale for the "allow pseudonyms" recommendation is "Article 6 para 1 letter c) of the [EU] Data Protection Directive requires the data to be 'adequate, relevant and not excessive in relation to the purposes for which they are collected and/or further processed.' In this context, it can be observed that SNS may need to register some identifying data about members but does not need to publish the real name of members on the Internet."
The strong privacy rules also apply to those miscreants whose dirty deeds get them banned from these SNS. The recommendations say "Some SNS also retain identification data of users who were banned from the service, to ensure that they cannot register again. In that case, these users must be informed that such processing is taking place. In addition, the only information that may be retained is identification information, and not the reasons why these persons were banned. This information should not be retained for more than one year." It is not clear to me whether by "this information" they mean only the "reasons why these persons were banned" or the identification information as well. I've contacted the Working Party to get some clarification.
The Party also says that third-party application developers may in some cases be considered "data controllers" which means they may also be subject to these privacy mandates. For example, the app developers are advised not to perform any operations on imported user contacts' data other than personal usage.
Further, they advise the social network services and marketers that any "behavioral marketing"--which selects which ads to serve up to users based on observation and analysis of those users' activity over time--is rather naughty as well.
Note well, these are recommendations, not official mandates. They're not made to get in trouble; rather they're made to keep you out of trouble.
Now ain't that neighborly?