the gays on okcupid seem to be the smarter, less-prone-to-hookup type.
i've gone out w/ two men from there when i was in portland and had a great time.
the first one, we bar-hopped on NW 23rd and then went back to my apt. and drank and did laundry. we didn't go on any other dates (lol, i think i killed it w/ the laundry), but we remain friends on facebook. i also remember sitting in some cozy-bar w/ him that night and insisting that i keep my shoes off. so, i was barefoot in the bar. on a first date. that may also be why there weren't any follow-up dates.
the other one. we went to boxxes downtown, which was lame because boxxes is lame. but, we had an otherwise good time.
none of the gay profiles seem to be too creepy, but i can't vouch for the straight guys. i think straight guys who use dating sites are a little creepier than gay guys. just because. well, they should have other options.