The aftermath of Microsoft's announcement that it'll buy Skype for $8.5 billion was filled with speculation about why the price was so high, who Microsoft was bidding against, and who inside Redmond was the driving force behind such a large expenditure. At least one of those queries has been demystified today, thanks to Bill Gates asserting himself as "a strong proponent at the board level for the deal being done." Microsoft's Chairman of the Board expressed his enthusiasm for gobbling up Skype in an interview with the BBC -- o