Have user profile show only the total number of discussions started by the user. The full list of postings will appear when this number is clicked. Reason: for some very active users (see http://moodle.org/user/view.php?id=1&course=5 for example), the discussions started list can get extremely lengthy, which affects download time (modem).

Include a similar statistic for follow-up posts, i.e. the total number of follow-up posts given in user profile, when clicked, expands into full listing.

Maybe also introduce pagination of post listings (15-20 posts per page), with most recent posts shown first.