Wow.. I didn't realize that you couldn't personalize the "away" messages with Windows Messenger. That's a huge weakness and will need to be fixed with later releases if I'm ever going to be able to convince my friends to migrate over to that platform.
Hopefully this is just a client problem and not a limitation within the protocol (as the former should be much easier to fix).
We often "profile" each other just to see who's doing what in their away messages. Knowing that they just went to see a blockbluster movie if a cause enough for a later conversation.
While I'm asking for things, can you add the ability to customize your profile as well if it's not already included with the latest release? I've got some friends that pratically have thier own "AIM Profile Blog" going even though they have no idea what a