I know a website that has multiplayer games and it shows the result of each game in mD5 hash mode before playing .
so It is the only trustworthy website to make money.
take a look and share your idea :
www.headortailbet.comI think there are many gambling and betting sites that one can play and you should not just single handly keep other out. Investors has makes money from sites like bitvest, Bustadince etc and then I believe that most of the sites has returned great profits for gamblers and investors.