In looking at the questions in memenu
it seems to be a abbreviation of "messaging".
Based on research by Eliah Kagan, the name is "Me Menu" and not a abbreviation,
This specification is for the “me menu” that appeared in Ubuntu 10.04, 10.10, and 11.04.
Warning /!\ This specification is now superseded by the system menu.
So should it be renamed to system-menu because of the specification change? Or we could leave it alone since it is out of date.
There even seems to be confusion within answers as one user says:
MeMenu(if you mean the "place" where you can change your status).