As someone who has been on many dating sites - be careful. Even Match, that's been listed above, has its share of trolls. I don't know how some of the guys got around paying for emailing, but they did. I had many get angry with me when I asked them questions about what they did or where they were from, and I ALWAYS turn off the chat. I want to browse; not be bombarded.
OKC is a free site and you're going to get a lot of hits, especially if you fill out the "sexy" stuff. I agree - it is WAY too much information for someone who is looking to just date. Hookup? That's another story...
Also, as someone mentioned before - DON'T hand out the digits. Even on the pay sites - there are some creepy folks out there.

Me? I'm an older gal who is dreading going back on a site. I am hoping that unlike my dating life via websites that things will now happen in real life. I've had no luck on them. I've made some friends, but that's about it.

Have fun, be careful, and take control of this by telling a friend or something if you're meeting someone for the first time. I always did that! I would tell a friend that I was going on a date. If it sucked or if I felt good about it, I would let my friend know either way. That way she knew I am safe.

Good luck!