Anonymous personalization hack in ASP.NET 2.0

One thing that I've been racking my brain around for more than a year is how to create/enforce anonymous personalization in ASP.NET 2.0, such that web parts and the portal framework can be used within a site without mandating membership on people. In my experience, this turns people off more than on.

Daron Yondem may have found the solution, by using a server-side cookie set via ASP.NET Forms Authentication and hidden from view. It's a pretty neat implementation.