Passwords, user accounts, email verification. I have never liked requiring my website's visitors to register before they can leave a comment. There is a large segment of people that like to submit quality comments online, but they don't want to be required to leave their personal information there. So from the beginning, I have always allowed anonymous commenting by unregistered visitors and for the most part, they quality of the comments haven't suffered. However, allowing for anonymous comments also invited my site into a war against comment spam. My latest weapon to do the fighting for me in this war is Mollom.
Before the beta was available to the public, CMSReport.com was invited by
Last year I was one of the beta testers for Acquia's