Yahoo shares are down 3.4 percent to $20.72 per share, nearing the $19 per share price when Microsoft made its unsolicited $31 per share offer on February 1. That means its time for Microsoft to forget how poorly Yahoo handled its offer and revisit its bid and buy the company on the cheap, argues BoomTown's Kara Swisher. Henry Blodget at Silicon Alley Insider says if this were June 2007, not 2008, private equity firms looking to raid and break up the company "would have been circling like pack wolves." How so? It turns out that after factoring in Yahoo's Asian investments and cash, $21 per share values Yahoo's core business at around $11 per share or $15 billion total. That's cheap, considering that Facebook is valued at $15 billion and only expects $300 million in revenues this year and Yahoo will pull at least $8 billion.