The gambling community can easily trust an old gambling site with zero complaints Riobet is one of these, but they should be busy posting here, they have an old thread here but lack activities coming from the OP of that thread.
I don't know if the same thing will happen to OP, I hope not, they are competitive outside of Bitcointalk they can easily gain a lot of new players here, we'll see if they are more serious now than before.