bp_get_member_user_nicename()

	function bp_get_member_user_nicename() {
		global $members_template;

		/**
		 * Filters the nicename of the current member in the loop.
		 *
		 * @since BuddyPress 1.2.5
		 *
		 * @param string $user_nicename Nicename for the current member.
		 */
		return apply_filters( 'bp_get_member_user_nicename', $members_template->member->user_nicename );
	}