I have a suggestion. Is there someway you could add something to let us know if we have posted in a thread. Many times I have seen a thread and can't remember if I have posted in it. It would be nice to have some sign to show that you are an active poster in a thread.
I have been on other sites (wont mention the name) where the thread name will change color if you have posted in it. I found this to be very helpful keeping track of various discussions.

On the top right of every forum when viewing thread titles you will see a drop down menu "Filter". from that menu select "Threads I contributed to" and it will show all threads that you have posted in inside that forum.

I did try this out but being a dial up user I found it painfully slow having to load each forum twice to see what threads I have answered. I still think maybe the changing title colour is a good idea. Just a thought.

Ed,

It is a great idea. Our last forum had it. The suggestion I made is just a tie over until we can implement it. the current code would be very inefficient to do this query on every page load so the filter methodology was used. Until a faster algorithm can be implemented and code overhauled this will hopefully bridge the gap until then.