''Mechanical Turk'' Drawing over satellite map images

We're looking for a person that can manage a large group of people to analyze and draw certain features over satelite image web mashup. It's all web-based.? The user logs in, performs simple tracing through the web application, and moves on the the next task. We have thousands of these.? Each takes about 40 seconds and we need to get around 5,000 done in a week.? We can pay around .05 per drawing. I can give you more specifics once you respond.