What Is a PII, and How Did My Post Violate the Forum Guidelines?

I just noticed a reply I posted <here> in the Norton Tech Outpost yesterday was edited by a Forum Moderator for violating the Norton Community Participation Guidelines.  It now reads:

Malwarebytes xxxx [PII removed by Admin]  just posted in Version 4.0 - Updating Definitions that the "Check for Updates" link located at Settings | About | Version Information "will check for all update types (Malwarebytes version, component package and database package)."

In my original post, "Malwarebytes xxxx" simply said "Malwarebytes employee LiquidTension".  What is a PII (or did they mean PPI for private personal information), and why would posting the username of a Malwarebytes employee violate the Norton Community Participation Guidelines when the quote was taken directly from a reply LiquidTension posted in the Malwarebytes Support forum that anyone in the general public can view?