I quite like the Microworkers website because of the variety of jobs it offers.
I cannot however, personally, see that it will become my main "earning source" in the immediate future because there simply isn't enough jobs that I am eligible for to keep my busy 8 hours a day. Now that I have been doing Microworker jobs for a few weeks I am starting to get faster at completing them, so I can complete more (and so earn more) per hour; but I don't think I have ever completed more than 10 or 15 per day, sometimes there are only a small handful of new jobs available when I log on and so I only do 3 or 4.
Doing Microworker jobs is however becoming quite an interesting and educational experience as, apart from earning money, I am learning the techniques that the Employers are using to boost their own businesses (I am learning, for example, the importance of building backlinks to my own website by taking part in Bookmarking jobs and Forum Posts). I am also learning about things like Google+ and the importance of getting these "likes", which is something completely new to me which I hadn't come across before. Who knows; I may even turn into a Microworkers Employer myself soon!
I reached the Payout Threshold for the first time on 6 March and I have been told that my Address Verification PIN is making it's way to me by mail so am eagerly waiting for it to arrive so I can enter the PIN and get my first wages! It is all quite exciting!
I am loving working for Microworkers and am finding it quite exciting and educational - the fact that I am getting paid as well is a real bonus!