Facebook's long struggle with privacy concerns and breaches hit another major bump today with the Wall Street Journal reporting that many of the social-networking site's most popular apps transmit personal information to dozens of advertising and Internet tracking companies.
At issue is the a Facebook users' ID which can be used to retrieve personal information and apparently "may be inadvertently shared by a user's Internet browser or an application," a Facebook spokesman told the Wall Street Journal.
The Wall Street Journal tested Facebook's top 10 apps and found that all of them were transmitting those ID numbers to outside companies. With the ID number a company can retrieve a person's name and, if they haven't made their account secure, other information including age, where they live and where they work.
FarmVille, FrontierVille, Cafe World, Mafia Wars, Treasure Isle and Texas HoldEm Poker, all Zynga Games titles, are among the apps transmitting the ID number.
The Wall Street Journal tracked that stream of ID numbers to more than two dozen advertisers and data firms. The story adds that it is unclear if the App makers were even aware the numbers were being transmitted.
Facebook is now in the process of introducing new technology to deal with the problem.
We've contacted Zynga for comment and will update when we hear back.