I am making a change in policy to this blog. I am no longer going to allow anonymous users to comment.
I am getting piles and piles of spam messages in my comments that are sent to my email inbox and it's polluting my inbox and my junk mail folder. This site's software security policies are so lax that it doesn't even do CAPTCHA for comments nor is there an option for it. So, either I have to move my blog away from MSDN (which I don't particularly want to do... but am seriously considering) or I have to disable anonymous comments to see if that works.
Hopefully it does.
We share the same problem. I disabled anonymous comments in all my blog, now my inbox "clean".