21 Lists - Send and receive targeted, paid microtasks
SEOClerks - The largest SEO Marketplace on the planet. - SEOClerks
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.
BitcoinGet - Earn bitcoin by completing tasks, answering surveys, watching videos, and more.
SerpClix - SerpClix is a click exchange network used to send more real clicks to your Google SERP. You can click to earn money or buy clicks to rank higher on Google.