sounds to me like a ponzi, and ponzi dont end good.. 
Back in the days ponzis start good make you profit but only for the first comers afterwards was a bloodbath & drama everywhere!!
Btw any news from your investment ??
God! Posting something which doesn't make any sense just to increase your post count? Bitvest is a legitimate gambling site. See their invetment discussion thread here https://bitcointalksearch.org/topic/bitvest-invest-in-a-gambling-site-1375103Back in the days ponzis start good make you profit but only for the first comers afterwards was a bloodbath & drama everywhere!!
Btw any news from your investment ??
It is not a ponzi. It is called investment in their bankroll, you get profit depending on how much the site is making from all the players playing in it. it does have risk that you may not get a profit but it is not a ponzi like you are saying.