On the other hand you should be definetly sure that it is a real casino and not just a Ponzi scheme website. I mean you can still make some profit even on a Ponzi scheme website, but you will probably lose much more. And this is a really big disadvantage of smaller sites. You usually can never know
How would someone mistake a ponzi scheme for a casino?!
Sure, they often claim to be trading or investing or whatever, but I've yet to come across one that claims to be a fully working casino and actually fools someone with it.
But you can See sites overview here at Dicesites.com and invest sites who is profitable for investor at the moment.
Past profits are a bad indcator for future profits/expected profits.
That's true, it's better to invest bigger amounts, but if you only have a small amount to spare, investing in a small bankroll site does work, as smaller sites will probably have less whales or none at all.
Percentual profits/loses are the same for small and big investments, unless we bring in other factors like kelly criterias.
It doesn't matter if you invest 0.01 or 10
BTC, you'll get the same Percentage at the end of the day, only the real number is a whole lot different.