The commenting system I've been using on my website, Ment-O-Matic.NET 1.0b, has been released to the public under GPL. If you use Blogger or similar blogging systems and in need of a ASP.NET based commenting solution, give it a try. It should be very easy to setup and use.

UPDATE: While I was setting up a test bench on Brinkster, I noticed that I was using a feature that was only available on CLR 1.1, so I had to disable the auto-URL parsing feature on CLR 1.0 until I find time to fix it in a backward compatible way. The zip file has been updated along with a HISTORY.txt file that makes note of the change. The Brinkster test bench is here.