Comet
Comet have been selling kindles for a few months now.
3 publicly visible posts • joined 27 Jan 2011
That social authentication has been about for about a year now, it is nothing new. When i was on holiday and logged into facebook, it showed me pictures of friends to name them before allowing me any further into my account, nothing 'new' there, just because they blogged about it doesn't make it new.
Good job on the SSL though fb :)