Shoutbox

Hmmmm, it is possible.
Definatly.

But i'm not sure if it's possible with the official client (it should need alot of patching)

Here's how the protocol works with dp:

When you sign in, it sends your status to the NS with the dp you assigned, only the local path to the dp. (This also happens every time you change your status/dp)

When a user opens a conversation with you, the client is going to ask for the file(you specified to the NS) via P2P.

Now the client sends the gif. But this is a diffrent process for every sb(conversation). So therefor you can just send any gif to the other user and user's client is going to accept it.

So it's possible in theory.

But i doubt it's possible with the official client, ofcourse there are enough opensource clients out there (aMsn, Gaim, ...) that can be edited.

Just my 2 cents....