I think this is not the place to complain about binuses being too low...
Some casinos give higher bonuses, but that doesn't mean you can make money easier there. It all depends on games and house edge...
Why not, as long as the complaint is about the bonuses given by betfury, posting the complaint here in the ANN thread of betfury is fine (applies to all other casinos)
Complaint can be taken as feedback by the casino to improve, as long as the complaint comes from real players, it should be appreciated.
This is one of the purposes of a casino having an ANN thread in this forum, to get feedback/review both positive and negative so the it can be used by the casino to improve.
I can say it is even better to read complaint in ANN thread than just general gambling discussion which has no direct relation to the casino itself.