This might have been suggested before. I was just thinking it would be cool if you could tell which members were online when you read their messages in forum threads. Like it would say "[Online]" under their name, or their name would be in bold, or offline users' names would be grey or something. Then you would know you could sed a private message to a user after reading a forum message of theirs and expect a reply shortly. Obviously you can check if they're online just now by looking for their name on the user list on the left or by clicking on their name and then have it tell you "online"/"offline", but this would be quicker. Maybe it would take a lot of coding though, eh?