I have a suggestion that I came up with just a while ago. I'm not sure if anyone else would like it or use it, but I just decided to throw this out there.
When you go to your profile, and click on "My Threads", you get the two lists of threads you've made and recent threads you've posted in. I think there should be the ability to remove certain threads from that list.
For example, if you comment in a thread, but don't care about it anymore, I think you should be able to remove that thread from the list, while keeping your post IN the thread, of course. I, personally, have quite a few threads on that list that are either completely inactive, or I just don't care about anymore, and find it tiring to click on it every time I think there's a new comment, finding out that it was the same one I saw a few days ago.
Any opinions?