And then Facebook starts offering your “daddy” account to your family in the “people you may know category” because it sees that you hang out with them in the same location
key word there. I hope FB doesn't crack down on it, people are (IMO) entitled to multiple online identities and false identities. I'd like to keep work and private separate; I have a friend who uses a false name to try and avoid her stalker, etc.
Most often, when they suspect you have more than one, they'll close the multiples after requiring you to verify your identity on one (or more) of them.
Source: I only have one, but I run in occult circles. Many folks keep their occult stuff seperate from their main friends, family, and work account, with some overlap. Sometimes folks will go through and turn them in, and most folks turn around and make yet another new one.
I don’t think they actually try too hard. I have two accounts which the most trivial of algorithms would have caught and haven’t been flagged >5 years in. (Always logging in from the same machine, no cookie clearing, in quick succession).