bp_get_activity_user_link()

	function bp_get_activity_user_link() {
		global $activities_template;

		if ( empty( $activities_template->activity->user_id ) || empty( $activities_template->activity->user_nicename ) || empty( $activities_template->activity->user_login ) ) {
			$link = $activities_template->activity->primary_link;
		} else {
			$link = bp_core_get_user_domain( $activities_template->activity->user_id, $activities_template->activity->user_nicename, $activities_template->activity->user_login );
		}

		/**
		 * Filters the activity user link.
		 *
		 * @since BuddyPress 1.2.0
		 *
		 * @param string $link The activity user link.
		 */
		return apply_filters( 'bp_get_activity_user_link', $link );
	}