So last week was the big announcement of Microsoft’s $8.5 billion purchase of Skype. Some people may have forgotten back in 2008, Microsoft bought Danger (the makers of Sidekick) for $500 million. That did not work out as well as Microsoft had hoped as seen by summer 2010 release of the Kin phone (which if you blinked you missed it lasting only 7 weeks on the market). In December Microsoft washed their hands of the Kin Phone. Further the Sidekick brand ended up returning to T-Mobile. Of course there’s the on again, off again talks of acquiring Yahoo! As of…