OS X Mavericks is free from Apple, and has no ads. Various incarnations of Linux are free - also no ads.
Why would customers want a "free" version of Windows, only to be inundated with ads...
One thing I've noticed about Outlook.com - I get LOTS more spam than I used to with Hotmail. Must be a Microsoft feature.
Microsoft must be desperate to sell Surface - trying to get people to train in an iPad
The question still remains, will the Surface 2 sell better than the original Surface?
ZDNET describes Surface2 as....YAFS - Yet Another Financial Sinkhole