We allow some incentive sites, you can sign up at Copeac.com and we can review your site and if accepted you can run our incent only offers.
CPALead is a good one. They automate most everything so that you don't have to manually update the offers on your site.
There's a few out there, but they are becoming less compared to what there were due to the increased amount of fraud. I think there is still around 20 - 40 that allow incentive sites in the list in my sig though, but not sure which ones. The best thing to do is that if you signed up to any CPA network is to first check whether they allow incentive sites or not, that's if it's not mentioned on their site.
Whynot: Thanks for the feedback, I thought all the incentive aff feedback will automate updated for every transaction.