[paraxisi]

I feel like this is a very naive way to look at this. As kpcyrd said, you're simply adding to their data, not 'corrupting' anything you've previously shared. If anything, you're sending up a big red flag from suddenly changing your gender, location, etc all at once.

[javajosh]

It may not hide anything from FB, but it will hide from anyone using FB to observe you, which seems like what the OP wants.