not. because most of the bounties that I observed at the moment actually caused losses to the participants because they did not get their payment and also did not get results. which obviously they lose time
Bounty campaign is really make some money so many participants are not accept your words. But If you choose in worst projects it will never make profit, nowdays everyone wants quick profit so signature campaign is right way for many peoples. In my thought is forum was active continuously in all the sections so surely knowledge was increasing slowly. If we earn the knowledge it make many profits for future.