I've done both POF and OKC because I just don't have the money. When I did lay out the cash for a 3 month membership to Match, I found it to have just as many scammers.
I think we all get taken in at least once, though I don't necessarily mean getting scammed out of money. But then you start to learn what the red flags are. I try to imagine what would I think of what a man types if they were saying it to me face to face. If I was in a supermarket and a man I just met raved on about how beautiful and sexy I am and how he's looking for a soulmate...I'd run like h311!
Aside from moving too fast, there's also lack of details about himself, no interest in your interests, poor spelling and grammar. Oh, and if he can only get on at "weird hours ", he's married.
The FAQ's about scammers on those sites are very helpful, btw.
My ex-husband is proof to me that losers, liars, and jerks can be found anywhere you care to look, not just the internet. He's also proof to me that if you care about yourself enough not to settle for less than you deserve, then those jerks will filter themselves out because they want a easy mark.