We have this new feature in Whidbey called Zero-Impact Projects.  It allows you to create projects without saving anything on disk.  I used this all the time as a QA folk, because we’re constantly creating and discarding projects when doing our testing.

To enable/disable Zero-Impact Projects (ZIPs), go to Tools – Options – Project and Solutions – General.  You’ll see the option “Save new projects when created.”

This option does not apply to VC projects.

Happy Visual Studio’ing!