For awhile now I have been wanting to show the total number of topics started and replies in a bbpress forum on the profile page. Today I finally figured out how. I like bbpress quite a bit, as it integrates very nicely into wordpress. The main downside of bbpress right now is that the documentation is still basically nonexistent. Maybe someday I will help out with it.
Anyways, to get the total number of replies, simply use the following little mysql query:
$totalReplies = $bbdb->get_var("SELECT COUNT(post_id) FROM " .
$bbdb->prefix . "posts WHERE poster_id=$user->ID");
To get the total number of topics started, use:
$totalTopics = $bbdb->get_var("SELECT COUNT(topic_id) FROM " .
$bbdb->prefix . "topics WHERE topic_poster=$user->ID");