Amazon Mechanical Turk

Amazon Mechanical Turk follow's Googles Any Quention Answered service by allowing people to submit tasks to be done, and others to do the task and post the results in return for (micro) payment. The difference is that mTurk uses a web services interface so that a program can submit a question and then post the answer back to the client, as though the machine has worked it out! Not sure about a 7 day latency though.