[secorp]

We've had success outsourcing some of our non-core activities in our shop (4 p2p hackers working on distributed storage). For example, we've outsourced our website implementation and our Facebook app. Though any one of us could do them, it was much more efficient to draw up a set of screenshots and functional goals along with our API and then get back to working on our core project.

One key success factor is to find a high quality group to work with. We used recommendations, but I've also seen a few 2-person shops use oDesk find people for prototypes of applications they didn't have time/interest to build. The prices are extremely competitive, and often you can hire 3 people and use the best result.