GaG has about 5 million unique visitors per month worldwide. The company is small and probably employs a dozen people. There are countries where GaG is relatively more popular than in the U. S. One such country is Turkey. There are more females than males I believe. Are there weird people... of course... but the number of weird people depends on your definition of "weird."
I don't know how many there could possibly be. I'm sure it's in the thousands with the vast majority being short-time accounts. I'd say the ratio is probably 60/40 (F to M) - but that's just a guess.
There are a lot of fucking weirdos on this site. Catfishers, mentally unbalanced guys, attention whore girls, and a lot of just misfits. But that's what helps make it so interesting. Although the catfishers are assholes.