Has anyone ever been paid using Zenzuu or Yuwie?

I too have been a member of Yuwie for a couple of months now and when I check my earnings page it says I have earned 2 cents. For this reason I don't tend to use the site that much maybe on the odd occasion when I remember about it I might log in but it hardly seems worth it for such a pointless amount. I think the only way you can earn there is by having lots of referrals as these will help earn you money. Find the site a little on the confusing side too. Am also a member of Zenzuu but haven't too much interest in this site as I feel it may be like another version of Yuwie.