Fiverr - One marketplace, millions of professional services.
SEOClerks - The largest SEO Marketplace on the planet. - SEOClerks
Upwork - Forget the old rules. You can have the best people. Right now. Right here.
Picoworkers - Earn money from doing short, easy tasks similar to Microworkers. Picoworkers is the best alternative to Microworkers I ever find.
HireOwl - Hiring students for internships and freelance projects
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.