New file extension .armx

from MSN Japan

[lukasz]

Has anyone have any idea what this extension stands for?
I saw it at MSN Japan (home.armx). MSN US doesnt use that extension.

[DrDoc]

A Really Mysterious eXtension? ;)

Seriously, no... I have no clue. Does the source give any hints? Maybe it's something Japanese?

[webdevsf]

It's very easy using to define your own extensions for custom handlers in .NET.
Some built-ins are:

ASPX is ASP.NET
ASMX is ASP.NET Web services
SRF (which you see in MSN passport login scripts) is a stencil request file - essentially a more manageable way of writing ISAPI dlls in C++.

ARMX is most likely a custom .NET handler for some content management system they've developed.