The news is everywhere this morning about Microsoft's $44.6B offer to buy Yahoo. The offer represents $31 a share, a 62% premium over Thursday's closing price; and Yahoo's stock price has been rising in after-hours trading. Microsoft has been making overtures to Yahoo since 2006, according to the CNet article, including a buyout offer last February that was rebuffed. Mediapost.com has some perspective on the deal from the point of view of ads and eyeballs. Such an acquisition, which would be Microsoft's largest by far — it bought Aquantive last year for $6 billion — would need approval by US and EU authorities. A European Commission spokesman declined to comment.