modifying plugin folder ?

Hi,

For now, thanks to symlinks, I share all my theme folder on all my installs. It works just fine, and manage selection with supporter. Just... rocks

Is there a way to do the same with the plugin folder ? Using symlinks ? (did not test it in fact...) ? modifying some path in wp configuration files somewhere ?

That would rocks, for now I update one folder and just copy (linux command) into others frome my 2 head installs (wpmu / buddypress)