WP no-externallinks + buddypress

Hi!
I was wondering what I would need to write in order to apply the plugin wp no-externallinks
to the profile pages of buddypress? I need these so that I won't get 50,000 auto registrations filling out their profile with backlinks.

I only wanted something that would restrict links to same domain only. I have this for groups and forums - so that if any member posts a link other then a pandragon link it will automatically be censored to text only.

The code I have for the parser file is:
add_filter('bp_get_the_topic_post_content', array($this,'filter'),99);

add_filter('bp_get_activity_content_body', array($this,'filter'),99);

Does anyone know what i should have for 'bp_get_activity_content_body' for profile field data?