.@W3C Nu Markup Validation Service: http://validator.w3.org/nu/
the #HTML5 conformance checking tool!
@domenic Did you check the Fronteers presentation I sent you before? It explains all this +@stevefaulkner @w3c
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@mathias I think I got about 60% of the way through before InstaPapering it :PThanks. Twitter will use this to make your timeline better. UndoUndo
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