Kai's profile on People Per Hour. Great copywriter, local to Edinburgh, incredible prices.
An interface to create jobs on Amazon Mechanical Turk (jobs are called HIT, Human Intelligence Tasks). Provides tools to enhance the functionality of mturk. Unsure of pricing model.
Scribe is an easy to use SEO tool that analyses content (blog posts, etc) and suggests ways to improve it based on SEO best practice. It also provides a keyword research tool that shows search volume for related keywords to the one entered. Useful. Pricey