I've found my best dates lately on OK Cupid, which is a free site. I don't know where OKC advertises but it seems to draw a somewhat hipper crowd? I met my first boyfriend on Plentyoffish, which is also free, but the guys on that site in my area aren't as interesting. I joined Match but I don't think it's worth the money -I haven't found the guys there any more worthwhile than on the free sites.
