Almost all bounty tournaments played in the online poker world these days are "progressive knockouts" in which the value of the bounty isn't fixed but can increase and thus remain relevant throughout the tournament. They differ from the Mystery Bounty tournaments at 888poker in that those mystery bounties remain a secret until someone wins one.
Because of this factor, sometimes in these events, we might want to modify our play in multi-way pots to keep in a player that we cover instead of isolating a player who covers us. That means when we have a hand that can go either way, we almost certainly want to avoid driving a covered player out — a strategy that perhaps goes against what we might prefer to do in non-bounty tournaments or cash games.