I'm not sure why people would choose your deal over Stunna's to be honest. You'll probably have to think of ways to better his or the other deals. Why don't you consider one of the fixed rate deals where you pay 0.05 for 50 posts or whatever? You can cap the number of users and know exactly how much to budget for then.
This is better in the sense you get paid a lot quicker, every 2 weeks, not to mention that Primedice is slow paying out (He has 100++ people on his service, fully understandable) anyways.
I would sign up for this except I currently only have member status
Agreed, this being bi-weekly will attract some people; that said, even slightly better rates (and perhaps limiting the number of participants from the beginning, and max number of posts) would go a long way towards making this campaign much more attractive.
