Yes, good points. How would I go about enabling BB code in custom profile fields?
I run a role-playing community, and the members want to be able to display oftentimes long and complicated character biographies (requiring the use of a line break code), thread archives (requires linking), and other things.
I do not know this area very well, as we have never had need of custom profile fields. It would almost certainly require modifying profile.php to pass custom fields through the BBCode parser/transmogrifier.