For me, the reward is a part-time job. I use some free time every day to finish the bounty.
It's hard to get a lot without highly ranked accounts. We have to wait a few months to get paid from the bounty, so I view the bounty as part-time.
Actually, the bounty campaign can be used as a main job but you have to multiply knowledge about crypto currencies and understand good English.
I think that language proficiency becomes the primary thing in being a bounty hunter. If we blocked the ability in the language, I guess to make bounty as jobs remain very difficult. actually a lot of fields that can be used to get the bounty money. but I guess it will all spend a lot of time.