I've played a good amount on BOL but not a huge fan of the site. These days I just stick to mostly freerolls on there. The wednesday Cardschat Freeroll is great I try to play it every wednesday.
As some other members noted I suspect some foul play going on at BetOnline. Not just users colluding(which is rampant) but also foul play coming from the house.
As gon4iypes said, i've also experienced the "can't win a hand no matter what" feeling on BetOnline. Last time I bought into a couple tournies on there I got hit with back to back 2-outer suckouts right on the turn after getting it all-in on the flop. Was the same thing both times where someone called my all-in with small pocket pairs despite 2-3 overs being on the flop and then they immediately suckout a set on the turn both times as if they knew it was coming or it was a bot programmed to exploit players.
What was very bizarre is that both of these hands my opponents snap-called in an instant with small pairs despite there being a very wet board.