Facebook Roundup: Germany, Ceglia, Comments Box, Stock, Social Experiments and More

German Privacy Office Condemns Like Button – The privacy office of Northern German state Schleswig-Holstein has called for a ban of the Like button on grounds that it violates user privacy by sending browsing behavior data to Facebook. Starting at the end of September, it plans to sue German websites still using the plugin for 50,000 euro. Facebook says it is operating in compliance with European data and privacy laws, is approved by German’s central government, and the head of the complaining office, Thilo Weichert, is known to be a grandstander

Facebook Claims Ceglia Forged Docs – Facebook’s lawyers have revealed that they believe to be in possession of the “real” contract signed between Mark Zuckerberg and Paul Ceglia, who claims to own half of Facebook. The original contract, Facebook’s lawyers say, does not mention anything about Facebook. This same contract was also found on the servers of a law firm in Chicago. [Image Via Facebook]

Comments Box Helps Websites – A side-by-side comparison by the LA Times of Facebook’s Comments Box social plugin and an unauthenticated identity commenting system showed Facebook’s plugin improved civility of comments, drove more referral traffic, and sped up site loading.

Interpublic Group Sells Half Facebook Stake – IPG sold about half its Facebook stake, initially purchased for $5 million in 2006, for about $133 million this week. Now the group will take its profits and buy $450 million worth in shares.

Apple Store Incorporates Facebook – Apple’s online store now incorporates Facebook and Twitter integrations, allowing customers to share what they plan to purchase.

Facebook, Yahoo Test 6 Degrees of Separation – Facebook and Yahoo have partnered for a social experiment to see by how many associations people around the world are connected. The Small World Experiment will test the hypothesis that people are connected by “six degrees of separation.”

Facebook Publishes Security Guide – Facebook has published “A Guide to Facebook Security”, a 20-page .PDF written by security researchers designed to teach Facebook users how to protect themselves. It outlines how to avoid common scams, use Facebook’s security features, and explains that hackers might pretend to be popular apps like FarmVille, but Zynga and other developers aren’t to blame.

Facebook Zip Code Ad Targeting Inaccuracies – ClickZ reports that some early tests by Ads API developer XA.net indicate that in some cases Facebook may be showing that the expected audience for ads targeted to a specific zip code is higher than the census population for that zip code. This could be due to inaccuracy in how Facebook assigns users a zip code based on the city they list in their profile or where the site believes their IP address is located.

Sony’s PSVita to Include Facebook – Sony’s Vita handheld game console will include Facebook and other social apps when or soon after it launches, according to Electronista. The apps will be available for free on the PlayStation store.