Prolific Academic - Want a faster iteration between developing theory and executing studies?

Micro Work 4 all - New Website aiming to get more workers and job seekers to perform tiny task and make money.

Senja.io - Senja is the easiest way to collect, manage and share testimonials, online reviews and feedback from your customers.

Picoworkers - Earn money from doing short, easy tasks similar to Microworkers. Picoworkers is the best alternative to Microworkers I ever find.

Trust - Trust lets you easily create online surveys, collect customer video testimonials and reviews, then display them with beautiful widgets on your business websites.

Amazon Mechanical Turk - The online market place for work.