This is unacceptable.
This was a huge topic of discussion a few months back; someone should point these guys to the numerous threads here at CAP.
Retroactive changes are a breach of contract, and the affiliate community won’t put up with it.
Slightly off topic — the sites within TheBingoAffiliate Network look like shit, and I don’t know why anyone would bother promoting them. What an awful, ugly group of sites.
In any case, if these retroactive changes aren’t rescinded, every site from this network will be added to my blacklisted casinos page.