If there was a separate tab for each would be even better. One for discussions I've posted in, and a separate one for my discussions.
Especially when I want to look back at a specific discussion of mine. Right now I have to fist sort the Discussion/post list by alphabetically by contributor name and then find the appropriate page that I'm even on.
I also second the ability get opt for alerts to discussions postings.
The forum is great, I think these things would make it even greater!