My hats off to the team that put together the challenge. It is by far the best SEO teaching site I have seen. Thank you for dedicating so much time and effort for all of us to learn.
I'm curious, if you are using the formula taught here, how many sites can you effectively run? Do you advocate the run one site and make it your bread and butter or can you actually operate many niche sites?
Lastly, I have an interesting proposal for the next challenge. Who would I get in touch with to give some details?
Once again, fabulous job!