Useful MSDN Blog Links and Immutable Classes

The standard feed provided in the Visual Studio 2005 Start Page provides some very useful links. One of them is this:

http://blogs.msdn.com/lucabol/archive/2007/12/28/creating-an-immutable-value-object-in-c-part-iv-a-class-with-a-special-value.aspx

a blog tutorial on creating immutable classes and the clever things to do with them.

I'm hoping to build a large list of really useful links featured on that feed, here.

Yes, yet another list.