I honestly don't agree with dating websites since you never quite know who you're talking to. The person could be a scam artist, a fraud, a criminal or a pervert! I wouldn't trust them at all.
I think they're dangerous. Breeding grounds for sexual predators.
I sign up for them ironically.
I'm in a long distance relationship currently, but I met my guy on Facebook.
Previously, however, I was on dating websites. I don't trust people on dating sites. They all seem too shady to me. You don't really know who to trust. Plus, there's a bunch of horn*y people on there just looking for one-night-stands. So really, dating sites are a bad idea. Although,yes, there are the occasional few who do find someone on those sites and end up marrying them.
I don't care for them.