[mdonahoe]

1. It has a good name and theme. "Space Race" is a genius choice due to its double meaning.

2. This is marketed more as a competition between organizations than a simple referral program. Neither is a new idea, but the combination is interesting.

Also, the references to the Cold War are interesting, though I may be looking into it too much. Personal rewards for referring friends is like capitalism. Group rewards for each school is like communism. With Dropbox, you get both! :)