Theres always one..
Gaming is one of the biggest things since the 90's, and there is 3 main competitors which are Sony (PS3), Nintendo (Wii) and Microsoft (XBOX). One thing this blog post isn't going to do is make an argument between gamers, as many gamers own all of the 3 above consoles.
On the market right now, Sony and Nintendo have more consoles on the market, for Sony the PS3 and PSP and for Nintendo the Wii and DSi, but what about Microsoft. Microsoft already have their vintage XBOX console, but what a 
handheld from Microsoft? Well, you could say that one of their 'netbooks' are one of their takes on the handheld console, but please, you can't game on the netbook. Maybe a laptop, but its about 3-4 times bigger than Sony and Nintendo handhelds. So, c'mon Microsoft, where is your handheld? Is it still being featured on Engadget as 'coming soon' or many Youtube videos being made about it, and what it'll look like, what it'll do etc.
Instead of making new Windows operating systems, get a XBOX handheld console out on the market. But, don't come up with the excuse of "Well, Sony has a powerful console (PS3) and a nice unique handheld (PSP)" If Sony and Nintendo can enter the market like that, you can Microsoft!
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Jonny
Jonathan Rowntree