I was a little premature with my .Text modifications to get the www back into our URLs. I eventually reverted all code changes for that back to the original way it was done, and added the following line in the BlogConfigurationSettings section:

<UseWWW>true</UseWWW>

That's it. Much easier than what I was trying to do.

Well, almost. It doesn't work for the aggregate page. For that, I had to add one function to the code behind:

     1: protected string GetFormattedHost(string host, bool useWWW) {

     2:             if(useWWW) {

     3:                 return "www." +  host;

     4:             }

     5:             else {

     6:                 return host;

     7:             }

     8:         }

Then, in the GetFullUrl method, add this to the first line of the function:

     1: host = GetFormattedHost(host, true);

Now, all the links on the home page use www too, meaning our stats will start working again.