Amazon Mechanical Turk - The online market place for work.
Transifex - Transifex makes it easy to collect, translate and deliver digital content, web and mobile apps in multiple languages. Localization for agile teams.
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.
POEditor - The translation and localization management platform that's easy to use *and* affordable!
Bitfortip - Tip Bitcoins as an incentive | Earn Bitcoins for being helpful
Lokalise - Localization tool for software developers. Web-based collaborative multi-platform editor, API/CLI, numerous plugins, iOS and Android SDK.