I know that this has been discussed several times before and mainly suggested in the form of a plug-in, but is there any chance to consider to implement this feature in Messenger Plus! ?
I'm currently using MSN Shell (a bit of an obscure add-on for Messenger but it works very well) which has this 'auto hide to edge' feature and even an 'hide from taskbar' option. This way your desktop stays very clean and it just needs a mouse-to-the-edge movement to display the contact list.
Is there any reason why this was not considered before?