I've joined +10 bounties and I haven't been paid even for a single one yet. So yeah, the effort of thinking of all these bounties and listing them here just isn't worth it imo and doesn't help with anything. Bounties are mostly not paid because the "devs" are shit.
Now this one sucks.
10 bounties and all are failures or just a scam.
After that 10 times of not being paid I might really be tired of joining more.
Well, perhaps you should think of something new.
I have looked at some bounties and other are offering it with escrowed payments.
GeomaDao is one. The manager is handling 1,000,000 tokens and he is a trusted one.