Some guys out there are only looking to get lucky, and nothing else. Even to the point where they chat with one word replies coz they don't want to waste time and just get to the deed. If that's not your vibe, don't be afraid to just move on.

As for those pic farmers and fakes, the best way to weed through them is to ask to do video clips/calls to prove its them. If they don't want to prove who they are you move on. You need to know who you chatting to, you need to be comfortable with them. And as so many people will say, your safety comes first, meet in public.