The hardest part of making those websites work is attracting women on it, and it's not easy. Men are natural predators.

In 2008/9 I used a french website "adopt a guy" (adopte un mec). It was really disruptive because it gave women much more powers. Men can only "charm" women, and women must "adopt" men if they want to talk to them.

To be honest I was really surprised, it worked so much better. Women were more confident and it showed, I was having more discussions. Granted, I had to be patient, but the experience was much better.

Obviously dating websites should not treat men and women equally.