Hi.
I was thinking a greasemonkey script that would launch a Wall-to-Wall section of page to chat with other users would be great. Say I'm watching UserX wall, and want to start a conversation with him, I can click a greasemonkey added link that says Wall-to-Wall and a section or a page opens so i can send him wall posts and when he answers it will appear in that section, making it a useful chat window.
Thanks to all the great coders around.