Shoutbox

Like you can drag almost anything into a conversation window (i.e. dragging an image file into certain parts of a convo window either sends it, sets it as background or sets it as display pic), you should be able to drag a contact on dekstop into a conversation.

That would be very useful actually. Same with dragging them from the contact list itself. Certainly easier than using the 'Invite' dialog.

you can already drag from the contact list

You cant drag it from the contact list to desktop, you have to say add contact to desktop. Draging is a nice idea