But now the data available to the credit bureau consists of you being friends with others, then unfriending them just prior to applying for credit. Which sounds like an intent to deceive, which is worth -200 points on your credit score. You didn't think unfriending people erased your historical association with them, did you? "Deleting" data is so 1995. Facebook has never deleted anything, and they're not going to start. Google may be partially anonymizing some old data, but my guess is it isn't really anonymous - probably Google can reconstruct everything you have ever searched for, ever.