Sorry, but from a freelancer's point of view, this is a terrible income source. Most of those jobs only pay you $10, $20, etc. and oftentimes, a freelancer needs to make thousands of dollars a month to make a sustainable living.
Not necessarily, in many parts of the world you can live just fine with few hundreds of dollars, and if you are in Venezuela, Cuba or some African countries you need even less than that.
I never used microlancer or any similar websites but I see there are a lot of affiliate links and referral links there.
Do we have new freelancing sites excluding those known list above?
Yes there are more websites like laborx.com or blocklancer.net, but I don't think that any of them got any real traction so far like fiat based freelancing websites have.