I have seen one player abusing the bounty mechanic like this...
When trying to attack a player who is a much lower level than yourself, you get a message saying that you cannot because they are too low.
However, if you bounty that player and then attack them yourself, it works just fine.
The player ESH has abused this mechanic - on me - allowing him to attack me while i was as much as fifty or even less levels lower than him.
Please fix this, or just remove the lower level attack restriction all together. It makes sense that another player of higher level can attack the player, but not that you yourself can!