As some of you may know, I managed to get Thrifty.com to work on the June 2005 CTP. I have had Thrifty.com compiling for a while on Beta 2, however I never could book a reservation because something was forcing a redirect to the login page. It looks like in Beta 2, FormsAuthentication.SignOut() (required for Blue Chip) redirects the user to the login page no matter what. For some reason it doesn't do this in the June 2005 CTP. After removing the sign out code Thrifty.com comes up fine. Any how, we'll look at rebuilding the entire authentication system for Blue Chip since we can take advantage of some of the 2.0 features regarding AutoDetect of cookieless users.
Read the complete post at http://www.dotnettipoftheday.com/blog.aspx?id=94