Amazon Mechanical Turk - The online market place for work.
Respondent - Respondent helps you find any target audience in the world for in-person and remote research studies across all research methods including interviews, focus groups, surveys, and more. Respondent works with any research tool you already use.
Crowdin - Localize your product in a seamless way
Startquestion - Say goodbye to boring surveys and forms.
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.
Qualaroo - Qualaroo makes it easy to survey specific groups of website visitors to gain qualitative information.