So you're trying to get a bunch of privacy concerned bitcoin users...to give you their Facebook information? Pass.
Second. Facebook sucks hardcore. I am not concerned with staying anonymous but did leave Facebook a long time ago because the invasion of privacy was simply egregious.
If this still requires new user testing, and the Facebook requirement is lifted, I would be glad to help. I think mobile wallets are going to bypass desktop/laptop wallets. Especially since there are so many easy to use online wallets and exchanges.