The benefit here is photos - something like 50,000 of them get uploaded per day. JDATE, AVE MARIA SINGLES, SWEET ON GEEKS, CUPIDTINO, ETC...
If regular dating sites are limiting, imagine how restrictive sites dedicated only to Jewish (jdate.com), Catholic (avemariasingles.com), nerds (sweetongeeks.com), Apple-lovers (cupidtino.com, and that's i Phones, not fruits) and other single-purpose sites are?
But the key to OKCupid is that it uses more than just a survey to rank compatibility.
As with Google, the more active you are (the more you post), the more chances you have at finding love.
It's free for now (it was just acquired by Match.com), and seems to skew a bit younger.But for a wild time, visit Ok Trends, the site's blog, which tabulates all the interesting stats about the science of hooking up.