I have been using Blogger to manage my several blogs up to now. It is really a great engine, but I find I want a little more control and flexibility, so I am moving to Community Server, because it is built on ASP.NET, is free, and comes highly recommended. Now that it is installed, I realize it is really a massive system that I understand very little of. Even figuring out how to create this first post was much more difficult than I expected. There is no tutorial (that I have found) so I have done a lot of poking around to find it.
As I said I have a few blogs already. I am in process of copying all the content to this server. It's somewhat tedious, so the content will appear over time. The most useful content (on this blog) is already copied over.