According to HitWise, the current top 10 web dating sites in the U.S., are:

True, with 11% of the market. 55.9% of site users are male, 44.1% female.
SinglesNet, with 9.3% of the market. 51.5% of site users are male, 48.5% female.
Yahoo! Personals, with 9.13% of the market. 51.4% male, 48.6% female.
Match, with 8.22% of the market. […]