I don't know if you can implement these, but I do know they are available on other forums.
1. a "my threads" button in the FORUM submenu. next to the NEW POSTS link. pressing this button would populate a list of every thread that the logged in user has posted in, been mentioned in, or thumbs-upped in.
2. a tagging system. putting an '@' symbol in the body of text would flag a username. when a person types the username next to the epinota like this @R4N63R. it would turn bold and be a link to that user, as well as sending them a notification like the bat-symbol calling their attention. it seems that there is a mention system as there is a 'mentioned' statistic under my username on the left, but I don't know how it works
//edit
it looks like the @ thing does work. the reason why I didn't think it worked is because the user I was trying to mention has a space in his username. how do I mention that user?