The Wall Street Journal reports that... "Facebook, MySpace and several other social-networking sites have been sending data to advertising companies that could be used to find consumers' names and other personal details, despite promises they don't share such information without consent. [...]"
http://online.wsj.com/article/SB10001424052748704513104575256701215465596.html

Ars Technica comments: "[...] Facebook, along with MySpace, Digg, and a handful of other social-networking sites, have been sharing users' personal data with advertisers without users' knowledge or consent.

The data shared includes names, user IDs, and other information sufficient to enable ad companies such as the Google-owned DoubleClick to identify distinct user profiles. Some of the sites in question, including MySpace and Facebook, stopped sharing the data after the Journal asked them about it. The surreptitious data sharing was first noticed (PDF) by researchers from Worcester Polytechnic Institute and AT&T Labs in August 2009, who brought it up with the sites in question. It wasn't until WSJ contacted them that changes were made. [...]"
http://arstechnica.com/tech-policy/news/2010/05/latest-facebook-blunder-secret-data-sharing-with-advertisers.ars

So, what else is new? ;-))

I'm surprised to see Digg on there. Reddit ftw

Time to face the music[k], DPic, we're but ad-impressable fodder for the social networks' websites. They all promise to make our lives richer by organizing our human interactions but only as long as it can be "monetized." I don't blame them too much, since it is not really their fault that the most technologically and self-aware advanced society the Earth has ever known can not come up with better models of financing the progress of human behavior.