Work Markets

Open Markets
 * Elance
 * oDesk
 * Guru.com
 * Freelancer.com
 * vWorker.com
 * ScriptLance.com
 * Amazon Mechanical Turk

Related But Different
 * GetFriday - virtual personal assistant
 * AskSunday - virtual personal assistant
 * HN Hackers - Hacker News job board

Resources
 * How to hire a programmer to make your ideas happen, by Derek Sivers - how to shop for a worker on the open market sites