I paid $19.95 for membership. In one month, I've had over 150 "views". Was getting my hopes up. Yet I NEVER could get anyone to chat with me online. That's ALL I wanted at first. So, I tried an experiment. Sent the following message to women who had viewed me who were supposedly online - "you're not online right now. This is a fake profile, right?" Got ONE response - "Fake profile? Or is a way that you can get me to respond?:-)"
I got the response I was looking for.
Until proven otherwise, I think this is a scam run by a handful of people getting rich taking advantage of people who legitimately want to meet other people via the internet.
UPDATE: There were actually some quite attractive women on zoosk. That's why I got my hopes up. There are, of course, the not-so-attractive. I guess most of the attractive ones are fake.