If you're just looking for websites where you can work and earn money promptly like Microworkers, there are many legit paying sites that you can join for free.
For microtasking, Spare5, Crowdflower, Mechanical Turk, and Gethybrid.io are the more popular legit sites.
UsabilityHub is a proven testing site that pays you to review website design.
You may also want to join Humanatics where you get paid for reviewing calls.
Transciption jobs can be a good source of online income. Some online transcription sites that accept newbies include Scribie, GoTranscript, Rev, and TranscribeMe. Just read their rules, take them to heart, and be brave enough to take the qualifying test which is usually a sample transcription job.
If you have strong writing skills and want to make money out of it, you can join content writing sites or the so-called content mills. Constant Content and Crowd Content are just two of the legit sites I know.
If you have nothing else to do and want to earn money while relaxing or during your spare time, you can join Ayuwage, a legit site which pays several notches higher than other PTC sites.