I spotted this on the AutoCAD Research Twitter feed:

http://www.surveymonkey.com/s/AutoCAD_Internet

Autodesk wants to know your views on web content and how it relates to AutoCAD and your work. It’s a fairly big survey, but I encourage you to take part.

You can also sign up to participate in user research sessions here. This is a pretty direct way of letting Autodesk know what you think.