indeed but as far as i know they dont take a fee so they dont make profit if im right...
dont know how they will pay the sig campaign, ill contact the owner
I'm not very familiar on how it all works, since I only discovered this site few minutes ago.
But they do offer affiliate program with 5% of service fee. So there is a fee.
EDIT: found it:
How Does it Work?
Gambit takes a 1-2% service fee (rake) on all games with a buy in wager greater than 0 Bits. As a referrer, you receive 5% of Gambit's service fee for every player in the game who was referred by you. Example: 2 player game with a buy in of 100K Bits. Pot size would be 200k. Assuming a 2% rake, Gambit's service fee would be 4K. Assuming 1 of the players was referred by you, you receive 5% of 4K ... 200 Bits. If both players were referred by you, you would receive a 10% bonus, so 400 Bits.