Is it to engage in new campaigns and advertise for them and the next thing vooom....you are out in search of another campaign or is there something else which I don't know about
Bounties are always a nice offer to get free coins of an interesting project you can support from beginning. You get cheap tokens like participating in ICO which normally costs money. And I'm always searching for interesting projects, I never sell my tokens for a quick profit.
Holding your bounty tokens if you did a good research for your project will make multiple times more money as selling directy after listing.