Suggestion: Add a tab for discussions I started/have commented in
Is there an easy way to find them?
I think there should be a separate favourites tab, while the recall of threads you recently posted in has a relatively short life (ie, I only want to see new posts from more recent threads, or threads that have new posts), I likely would want an easy access of list of threads I want to reference later regardless of change.
Yes, it is unpleasant when I want to know replies of a thread and it turns out to be a big thread, resulting in mass emails. Emails could probably be compressed more into "5 new replies" in a weekly email or something and detailed following information would be put into optional notifications.