OkCupid, how you confuse me. I have friends who've met spouses through OkCupid. My last serious relationship came from OkCupid. In fact, I've been on OkCupid, on and off, for roughly the last 11 years.
Profiles are a lot more in-depth than most online dating sites, and if you answer a seemingly endless series of questions (much like a personality test), they will spit out a reasonable Match/Enemy percentage ratio on profiles to help you gauge compatibility based on interests.