I’ve only just started promoting BingoLiner, so I’ve no players yet. BingoMania isn’t two-tier as far as I know, but here’s a link anyway just in case : http://www.bingomania.com/adpage2.asp?sourceId=100566 .
Do you know of any place listing all the different Bingo softwares?
As it happens, I found one the other day : http://www.dot-bingo.com/review.shtml .