This sounds awesome.
The reason is that putting humans inside software lets you do incredibly powerful things.
Here's one of my favorite examples from the academic world, but it took a slew of difficult crowd-control hacks and months of research to get it working on Turk: http://hci.cs.rochester.edu/currentprojects.php?proj=vw
It'd be a weekend project to rebuild it on MobileWorks.
http://www.sec.gov/Archives/edgar/vprr/03/9999999997-03-0208...
These older forms lack consistency and would probably require lengthy instructions for data extraction. How do you do quality control?
We do a number of things to maintain quality. We do managed crowdsourcing, which means we provide support to our crowd. They can ask us when they do not understand a particular task. Also, our crowd is loosely forming a community both online and IRL. So, people help each other.
On top of that we have developed algorithms that check the crowd's answer against each other. Our algorithms also make sure that the right task is routed to the right person.
We also believe in paying our workers fairly. Happy, more productive workers leads to better quality work.