All my work on Mechanical Turk is to feed the data into a machine learning process that automates the task. Some tasks are easy to automate (any classification task), some others are harder (anything related to content generation, or vision).

I have to say though that there is a pattern: Once you solve and automate a process, people want more, and push you into doing a task that cannot be easily automated. Then you try to automate it, and the cycle continues...