Plz help me to promote donkeymails?

Tweet

I already cashout 40cents there its the first site i belived for cashout purposes. But i tried many things there still had confusion about their ptp program they are telling that we can earn 50cents for every 1000CPM But they had list out some sites where can only we can promote. I already promote in infinitybux but that ptp credits not count but i earned three referrals but they not active. So i decided to concentrate on their ptp programs where in clicksia and incentria we only get 10cents per 1000CPM