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. 45% are male, 55.0% are female.

1. PlentyOfFish, with5.68% of the online dating market (and the first of two free dating sites on the list), with 54.7% of users male and 45.3% female.
   eHarmony, with 5.51% of the online dating market. 68.6% of users are female, while only 31.4% are male.
   BlackPeopleMeet with 2.44% of the web dating market. 56.9% of users are female with the remainder being male.
   Mate1, with 2.33% of the web dating market and an almost evenly skewed male to female ratio. Like PlentyOfFish, it is also a free web dating site.
   ManHunt, with 1.90% of the online dating market. Since this is a gay dating site, it is of no surprise that most users are male (90.4%).
   Adam4Adam, with 1.86% of the online dating market. The site is predominantly gay, with 85.8% of its users male.