OKCUPID This site has been described as the Google of dating because of its data-heavy approach to matchmaking. 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 OkTrends, the site's blog, which tabulates all the interesting stats about the science of hooking up. okcupid.com
ZOOSK This is another general dating network, though with more shortcuts. Skip the lame profile-making and let your Facebook account do the talking, as Zoosk allows third-party sign-ins. Its mobile site, including a popular iPhone app, is easy to use as well. Zoosk's search has very strict age-limited results - under-20s can only show up in searches by other under-20s - but does a decent job of matching. And T-Pain has a song called Zoosk Girl. zoosk.com
PLENTY OF FISH The Vancouver-based, Lady Gaga-endorsed dating site is the most popular dating site in Canada, even though its design looks like a bad date itself. The benefit here is photos - something like 50,000 of them get uploaded per day. Beware - the site was recently hacked. plentyoffish.com
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 iPhones, not fruits) and other single-purpose sites are? I mean, you might as well be on seacaptaindate.com, the only dating site for sea captains.