In MLB, you are only allowed to put 7 players on the waiver wire at a time. In HBD, immediately following the trade deadline, people will put entire rosters on the waiver wire to get as many players through as possible. Along with prospects who don't need to clear in order to be traded, but serve as bait so someone uses one of their two claims on a player when there is no intention of a trade being made.
I really think there needs to be a limit. The way it is setup now is against the spirit of the game.