Micro Work 4 all - New Website aiming to get more workers and job seekers to perform tiny task and make money.
Fiverr - One marketplace, millions of professional services.
Picoworkers - Earn money from doing short, easy tasks similar to Microworkers. Picoworkers is the best alternative to Microworkers I ever find.
SEOClerks - The largest SEO Marketplace on the planet. - SEOClerks
Freelancer.com - Search for jobs related to Www freelancer com homepage or hire on the world's largest freelancing marketplace with 12m+ jobs. It's free to sign up and bid on jobs.
Amazon Mechanical Turk - The online market place for work.