= How can Bitvest and 777Coin sustain the campaign
1. No, not only this two casinos making profit from gambling. But yeah. they're one of the oldest casinos here. There left not too much old casinos with sig campaigns on this forum.
2. It's easy to answer: they just paying from 1/2 up to 1/3 of an average rate btc per post. With such strategy it's easy to have many people wearing your signature (even for 4 buks per week) and promoting you