Semel's Departure Could Set Up Yahoo/Microsoft Merger

Google (GOOG), one of my favorite overvalued stocks, is a great company. It dominates internet search and makes a bundle selling ads. Microsoft (MSFT) and Yahoo! (YHOO) haven't been able to compete. Will they finally team up to beat Google?

This is pure speculation, but there is reason to believe that Microsoft and Yahoo! will be cooperating more closely in the near future. Monday, Yahoo! announced that CEO Terry Semel is resigning. He is being replaced by founder Jerry Yang. But the most interesting part of the management shake-up is that CFO Susan Decker is being promoted to president. The media is already speculating that one day soon Decker will be named Yahoo!'s CEO.

Decker's promotion is key to a Microsoft deal. I say this because Decker was recently appointed to Berkshire Hathaway's board of directors. Warren Buffett's board also includes Microsoft founder Bill Gates. This arrangement will give Decker and Gates plenty of opportunity to get to know one another much better. They will primarily be discussing Berkshire business at Berkshire board meetings, but you can bet they will also have lots of time to strategize about how Microsoft and Yahoo! can work together to battle Google.