For our technology previews, I normally set up an email address and a discussion forum. Though feedback through the email address seems to be more popular, feedback through the forum allows everyone to see both the question and the answer.

Technology Preview	Forum	Email
	2D to 3D Tool for Inventor	labs.iv.2dto3d @autodesk.com
	3D Annotation for Inventor	labs.iv.3da @autodesk.com
	3D/2D ShareNow Add-in for AutoCAD, Inventor, Revit, and Design Review	labs.freewheel @autodesk.com
	BIM Family Toolkit	labs.iv.bim @autodesk.com
	Bridge Modeler for AutoCAD Civil 3D	labs.civild.bridge @autodesk.com
	CommunityCommands for AutoCAD	labs.acad.commcmd @autodesk.com
	Daylight Analysis Tool for Housing in China	labs.revit.sustainability @autodesk.com
	Factory Layout Optimization for AutoCAD	labs.acad.optimization @autodesk.com
	Feature Recognition for Inventor	labs.iv.feature.recog @autodesk.com
	Google Earth Extension for AutoCAD	labs.acad.google @autodesk.com
	Inventor Fusion Technology Preview	labs.iv.fusion @autodesk.com
	Mesh Enabler for Inventor	labs.iv.mesh @autodesk.com
	Panel Gap for Alias Automotive and Alias Surface	labs.alias.panelgap @autodesk.com
	Performance Monitor for AutoCAD	labs.acad.perfmon @autodesk.com
	Photo Scene Editor for Project Photofly	labs.photofly @autodesk.com
	Plugin of the Month	labs.plugins @autodesk.com
	Point Cloud Feature Extraction for AutoCAD Civil 3D	labs.acad.shape @autodesk.com
	Point Cloud Tool for 3ds Max/3ds Max Design	labs.3dsmax.pointcloud @autodesk.com
	Project Bluestreak	labs.bluestreak @autodesk.com
	Project Freewheel	labs.freewheel @autodesk.com
	Project Galileo	labs.galileo @autodesk.com
	Project Krypton for Inventor, Pro/E, and SolidWorks	labs.iv.krypton @autodesk.com
	Project Neon	labs.neon @autodesk.com
	Project Newport	labs.newport @autodesk.com
	Project Nucleus	labs.revit.nucleus @autodesk.com
	Project Photofly	labs.photofly @autodesk.com
	Project Scandium Technology Preview for Moldflow Insight	labs.moldflow.scandium @autodesk.com
	Project Snap for AutoCAD	labs.snap @autodesk.com
	Project Twitch Application Trials	labs.trials @autodesk.com
	Project Vasari	labs.vasari @autodesk.com
	Rhino Import Translator Add-in for Inventor	labs.iv.trans @autodesk.com
	Shape Extraction for AutoCAD	labs.acad.shape @autodesk.com
	STL Exporter for Revit Platform	labs.revit.stl @autodesk.com
	Subassembly Composer for AutoCAD Civil 3D	labs.civil3d.subassembly @autodesk.com

Though the forum is preferred, some users who use the new Internet Explorer 9 browser to post to the forums are getting blank posts. The web team is looking into it. Until a solution is in place, users can always fall back on email.

Repair work is alive in the lab.