Xbox One is going to be advertised and promoted to hundreds of millions of people this year, every time they turn their PC on

[Seece]

So with the announcement that Xbox App will be integrated into Windows 10, coupled with the fact Windows 10 will be available as a free upgrade to Windows 7 and 8 users, it seems Xbox is gonna get a free bit of marketing/promotion.

I wonder how easy MS will make it to sign up to an Xbox account, if once you have your email address linked you can just open the app and chose a gamertag and ban you have an Xbox live account.