Before starting my post I want to let me clear that, Here I am not promote any company or project. If I will find more micro task and bounty based site, I will add them in future. Those are searching for little job, this post will help them.
Here Is My List:
1. Reviewhunt
2. Latium
3. Ferrum
4. Bounty0x
5. Bountyhive
6. Bountyhunters
7. Anytask (Recently Launched)
All Those platforms that mentioned above I worked all (accept anytask) and earned from those platform. If you know such microtask site or bounty site that paid in trad-able cryptocurrency you can mention here in this thread.
Bountyhunters sucks, they aren't true with their promises, bountyhive is better but lacks spreadsheet tracking, I haven't try ferrum and Latium and bounty0x has low payment bounties most times, I think I'm better off with bitcointalk forum