I do not tick the " I do not know you box" when I get a friend request from someone I don't want to accept,BUT in fairness it firstly never gives anyone an idea that it will cause a problem, all it says is do you know them outside facebook -yes /no, there is no warning it could get this person blocked So maybe people are not doing it maliciously they just don't know the problem it can cause. Secondly I for one am a bit fed up of getting friend requests from people I don't know just because I've written something on a post (like this one), I don't know them, they don't know me, I've never interacted with them, but hey they think it's ok to send me a request, sometimes coupled with a message saying Fishworld. I for one prefer to get to know someone a little bit before I'm happy for them to read my personal stuff and I will never accept gaming/fake accounts knowingly, so maybe people are getting a bit tired & grumpy over all the requests. No malice intended just saying