No one likes them, their business, or the way they do things, but they only have access to what you give them. Made up name, free email address, bogus street address, fake phone numbers, the worst FB can get is your IP address which pretty much every site can get anyway. They might be able to view your search habits just like Google does. Google probably have more information about your habits than FB gets given they share all the data from gmail, searching and youtube, whereas FB only gets what's left in cookies. If you run an ad blocker, or even a specific FB cleaner you can get rid of pretty much every piece of targeted advertising so whatever they do collect is pointless anyway. Apart from that Zucker doesn't care if you follow Testament and Dolly Parton, there is no money in sharing that information with anyone.