Nice twist on not collecting email addresses into some bucket that will sit dormant for 2 years - pretty clever of you to poke twitter & facebook instead (which, I imagine, would result in more 'OMGVIRALZ' too).
I had actually had a very similar idea to this myself, but never got around to implementing it.
The design looks clean and very appealing, but why did you create it with a hashbang link approach? It doesn't appear to gain anything by doing that (click on the 'about' link)