He has been positive about bitcoin, then negative, then positive again, now he is negative again. What's this guy's deal?
if i had to guess i would say Microsoft has some plans about creating a new cryptocurrency! windowsCoin maybe

in any case i find it interesting that him and Buffet have never said "bitcoin is a currency" and never talked about it in that sense. all they do is that they try to say first it is an investment and nothing more then try to prove it is useless!
i don't know what to make of it yet...