FB idea is horrible way to distribute;
1) many countries fb isn't popular or even banned.
2) easy to have many fake accounts.
3) fb gets wind of it could even have your account suspended.
1. It's massively popular in all the major Bitcoin areas of the world including China and Russia. If your on Bitcoin sites you are gonna have FB probably. Yeah it's banned in some but then again it's a tiny minority and they would be using Tor or something similar of they are into bitcoin.
2. Yes it's possible but the giveaway excluded newbie accounts. Plus fake accounts are pretty easy to detect. Average person doesn't have a ton of FB sock puppet accounts.
3. Oh so you're scared of the man. Oh no FB suspended, maybe you better stay out of crypto when it gets illegal and your hunted down by the FBI and IRS. That day could come you probably already have transactions on the Blockchain under your IP address, running scared isn't a strategy.
Seems like people are trying to find something to be negative about for no good reason.