No matter what it is... it is free... and the words FREE and AUTODESK are never used in the same sentence!
I won't sign it, if it is not a piece of art.. So far, I haven't done any...
Revit Architecture 2012, Max Design 2012, AutoCAD 2012, Moi3d, Maxwell, Octane ... and many working hours
It says: "Autodesk 123D software is powerful, precise, and... free*"
See that little * sign next to the word 'free' ?
Oh Autodesk... you'll never change