As explained in About PAUSE, the modules@perl.org is not a mailing list. You send messages to it by emailing modules@perl.org.

I didn't find any follow up message from you. When did you send it and what was the subject line? Which email address did you send it from? Update I still don't see any followup from you in the link you post. I see the initial registration request and Adam's reply. Are you sure you sent a reply?

The deal with registering namespaces is that you need to choose a namespace that is descriptive and tells the user what your module does. No one cares what your initials are; they care about what your module can do for them. :)