Imagine if the 1.3B Facebook users were eligible to be called upon by the AI on a Quora way to answer a question the AI couldn't answer alone...

I think the quality of the answers would be along the lines of Yahoo Answers.

Code repurposing

You've probably worked on some interesting projects that are similar to some of the call-for-bids on oDesk or Elance.

Just look for the intersection between what code you already have and ongoing call-for-bids.

While bidding, send a screenshot and say that you already got the solution working.

Clients love avoiding the risk of paying someone to try and reinvent the wheel.

Wow ! This is exactly something I was looking for : adding tags the way you add recipients to a facebook inbox message. Sometimes, Ideas really are in the Air...