Nice hunt and definitely a time saver to me. This tool is really easy to use and I used their "flashmock" program to mock something really quickly to see how it work. The following link is an example of what I mocked:

http://api.flashmock.mocklets.com/123c0212-7e57-58d4-9279-0a78dc8aa2cc

If you don't want to visit the link, you can see the result in the image below (the link will likely expire eventually too):

Nice hunt, keep up the good work.