Well there's an accusation that the female users/members of the site are fakes, and that employees were paid to create profiles to lure men in.
Gee, y'think? I got a free 3 months on one of the regular singles sites and used it to explore how many actual women vs obvious fakes were on there. 90% of the respondents during live chat couldn't correctly identify the weather where they claimed to be. (And that's allowing for a huge margin in how one describes weather, too, but unless you're full blood Inuit, 40F and pouring rain ain't a beautiful day for a walk on the beach.
I am somewhat curious, though, how hard my ex wife is squinting to try and find my name in the released list.