I haven't done this site yet but I have heard of it. They do have a forum where people are posting proof of payments which is good. If you are going to try them out I would do free trials until you reach the $10 minimum payout to make sure they pay before diving in further!
I used to belong to them. I say used to because my account was marked as a "cheater" only because of my dial up ISP. I know that's the problem because I've had the same problem on a few other sites, but once I explained to the owners what was happening and they talked to the Shiftcode people, they were wonderful and reinstated me. Not the owner of Wild4Cash! I emailed them explaining what the problem was and they emailed back asking for my user name, which I sent them. I didn't hear anything so I emailed them back again and they never even had the decency to answer me.
If they asked any other owner, and I'm sure they know other owners because there are forums where they can talk to each other and also the GPT alliance, but I'm not sure if they are a member of that. If they asked any owner if I was a cheater, I'm sure they would vouch for me. I can't help it if I have to use dial up because honestly DSL isn't available on my block and cable is too expensive because we have DirecTV and can't get a package.
I had $4-$5 dollars in my account, but it's just the point that at least the owner could communicate with their members!