Possibly useful if you develop for tablets.
I found the results totally Useless - all it does is point out that you're lacking Windows 8 tiles (which you don't need since NOBODY uses Win8) and support for touch screeens (which is utterly irrelevant for PC desktop application)
== advertising to make more people support useless Win8 features which will never affect many customers
Helpful
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Free browser testing tools, cross platform testing tools and virtual machines from the Microsoft Internet Explorer team at Modern.IE