Chat Avatars?

[Alex M (Coyo)]

In some IM protocols/networks, group chats can have a "chatpic" or 
"convopic" essentially an avatar for the group chat as a whole.

Is there any technical limitation within pidgin or libpurple that would 
hinder an enterprising young plug-in developer from being able to bring 
such functionality to pidgin and other front ends to libpurple?

The protocol/network I have in mind is skype, however this functionality 
is not limited to this. some obscure protocols of obsolete/ancient and 
site-specific (facebook-style api-based) chat systems often have this 
feature as well, though i have not seen that feature reflected within 
pidgin.

Any enlightenment in this area would be greatly appreciated. Thank you 
in advance!