There is a interesting thread in gambling section about someone who is testing ivesting options. He invested 5 BTC in casino bankrolls.
He split this money and put 1 BTC each on different services: MoneyPot, CryptoGames, Betking.io etc.
Data from his investment/experiment could be valuable for people who want to know about potential profits of such investments.
Yes i have seen that link ->
http://bitcoingamblingreviews.com/bitcoin-gambling-investments-112 . Thats why i try tell people here. Its good investment. I will start make same stats but for more sites. So people can see what to expect.