PhinisheD (http://www.phinished.org/ http://www.phinished.org/) has done this for many years. You must have a user account to make posts, but if there are reas

PhinisheD (http://www.phinished.org/ http://www.phinished.org/) has done this for many years. You must have a user account to make posts, but if there are reasons to post anonymously, then you can do so by posting it as "AFT" - anonymous for this. Everyone has the same anonymous moniker, and it is clear when someone is posting anonymously. I like this so approach so much that I've actually created AFT or numbered AFT accounts in several places where I don't want a regular username associated with the comment. I also have themed usernames. Anything I post professionally goes with my real life name or a moniker known by my professional colleagues. I have several hobbies and several very different subjects that I'm trying to learn, and each of those have different associated usernames. I thought that OpenID would support this concept, but it never seemed to (maybe I was missing some key concept?). Now I have hope that Mozilla Persona might fill this gap.