lucapassarelli: #Tumblr CEO David #Karp says at least 70 #users have turned #blogging into #book deals http://t.co/v27InFch3H #content

lucapassarelli: #Tumblr CEO David #Karp says at least 70 #users have turned #blogging into #book deals http://t.co/v27InFch3H #content