Because I can't post this anywhere else:

http://www.bizjournals.com/buffalo/blog/morning_roundup/2013/12/greenspan-guesses-that-bitcoins-are.html?ana=RSS&s=article_search&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+bizj_national+%28Bizjournals+National+Feed%29