digg_url = 'http://digg.com/microsoft/Windows_Phone_7_Series_hands_on_and_impressions'; Forget everything you know about Windows Mobile. Seriously, throw the whole OS concept in a garbage bin or incinerator or something. Microsoft has done what would have been unthinkable for the company just a few years ago: started from scratch. At least, that's how things look (and feel) with Windows Phone 7 Series. This really is a completely new OS -- and not just Microsoft's new OS, it's a new smartphone OS, like webOS new, like iPhone OS new. You haven't used an interface like this before (well, okay, if you've used a Zune HD then you've kind of used an interface like this). Still, 7 Series goes wider a