We have created a new discussion forum specifically for the Solar Radiation Technology Preview for Revit:
Although we still have our email alias, firstname.lastname@example.org, to receive feedback, we encourage use of the forum. The difference between email and the forum is that everyone gets to read the feedback plus our responses. When you send us an email, you receive our reply, but other technical preview evaluators do not get the benefit of the information.
I have been in discussion forums for years; everything from WHIP!, Heidi, DWF, Volo View, Design Review, etc. I am old school. I use the Outlook Express newsreader:
Alas soon Autodesk will be moving to a new discussion forum and nntp (the protocol that the Outlook Express newsreader uses) will not be supported. I will use my browser to participate in the newsgroups. The new discussion forum platform does keep track of what you have read and not read based on your Autodesk Single Sign-on login. This old dog will have to learn a new trick.
Opening up the feedback channels as widely as possible is alive in the lab.