Well at least someone will be buying Microsoft shares...!
Large buy backs are usually an attempt to "fund" past options programs...
Buying back your own shares is a sure sign that you've run out of "good things" to do with the corporate treasury cash...!
Not really an indication of dynamic expansion... More an signal of consolidation and merely holding on...
Microsoft should find a better use for it's money than buying back it's own shares...which have been going nowhere for a long time...probably for good reasons.