Bounty isn't for everyone.
1. If you are the type that wants quick result do look away because bounties will disappoint you
2. We have too many scam projects this days and they plan to use bounty hunters for their dirty work.
3. There are few limited bounty managers that introduce escrow payment this days, this decrease the chance of not getting paid, julerz12 and bounty detective use escrow.
Bounty is all about trying your luck but still I suggest you choose the project wisely.
If you have no other work and are free, then you should join bounties. Even if few of them may scam but still you will get something for working in bounty. Instead of wasting time on other non-productive activities, the bounty is still a good option to gain some free tokens.