As a mod, I get a sort of top-down view on Fluther shenanigans.
That said, I see a lot more spammers than trolls, though trolls are definitely out there (and quickly dealt with).
There are a few tenacious trolls who continually come back after being banned several times… Windsuit fetish guy, the guy who really wants nice people to help him remember 1994 or 1991 or whatever, and various incarnations of previously banned members who for whatever reason think that Fluther is serious business enough to warrant coming back to over and over and over again to seek some kind of vengeance for being banned.
The spammers are usually more entertaining. Especially when they use huge amounts of “Engrish” in their posts. Like “where buy you quality replica handbags? Wonderful. I know you love it. Good prices for you.”