Kotango!
There is a new dating website in town, and its made specifically for the polyamory community, called Kotango! . For a long time I have been on okcupid , which is a free dating site that seems to have a few poly people on there, but the vast majority are heterosexual monogamously minded folks so you have to spend a lot of time sifting through the profiles looking for people who practice or are open to polyamory. Kotango is all poly people, and done in a classy, safe for work viewing mainstream sort of way. If you are on there, you can find my profile as Happy Hedonic. Say hi! Update 2017: Kotango went belly up a long time ago. Sorry to see it go. I'm sorry to see that the website didm;t work out, for what ever reason.