Micro Work 4 all - New Website aiming to get more workers and job seekers to perform tiny task and make money.
Bitbounce - Charge unsolicited email senders a cryptocurrency fee
Picoworkers - Earn money from doing short, easy tasks similar to Microworkers. Picoworkers is the best alternative to Microworkers I ever find.
21 Lists - Send and receive targeted, paid microtasks
Fiverr - One marketplace, millions of professional services.
Bitbounce-Credo - A cryptocurrency spam solution