Recent quotes:

Microsoft sees worst stock drop since 2000: welcome to the Post-PC era
Microsoft takes $900M write-down on Surface, but Office 365 looks strong
Instead of being the center of the personal computing world, in other words, the PC is becoming a specialized office-productivity device
Shipments dropped to 76m units, a nearly 11 per cent decline for the second quarter compared to last year, as consumers turned to inexpensive tablets over desktop or laptop computers, especially in new markets, according to a report released on Wednesday by Gartner, the research company.