AOL has agreed to buy Huffington Post, one of the fastest-growing U.S. news site for $315 million.  The price is more than five times the $60 million revenues of Huffington Post.   Combined, the new AOL/Huffington Post claims 117 million unique visitors in the U.S. and 270 million worldwide; it’s a scale play to participate in the Big Leagues of digital news media.    Source: Outsell Inc. a co-founder member of BIIA