(speculative) post on the internal debate within Google on GooglePlus' realname policy.
First Data Protection agency that plays it hard: using FB's Like Button and other social plugins considered infringing.
"… calls on all institutions in the federal state of Schleswig-Holstein, Germany to shut down their fan pages on Facebook and remove social plug-ins such as the “like”-button from their websites.
.. such features are in violation of the German Telemedia Act (TMG) and of the Federal Data Protection Act (BDSG)..
By using the Facebook service traffic and content data are transferred into the USA and a qualified feedback is sent back to the website owner concerning the web page usage, the so called web analytics (Ger.: Reichweitenanalyse). Whoever visits facebook.com or uses a plug-in must expect that he or she will be tracked by the company for two years. Facebook builds a broad individual and for members even a personalised profile.
.. There is no sufficient information of users and there is no choice"