List only users who uploaded avatar

Hello!
This plugin is cool – thanks for your work! I′d like to use it on a BuddyPress site. Like shown in your banner not all users upload an avatar (I disabled Gravatar) and to much grey default avatars don′t look nice on a page. So an option to show only users who uploaded an avatar would be great.

Here′s the code to check this for BuddyPress:

// check for avatar
function bb_bp_check_avatar( $id_or_email ) {

	$author_id = $id_or_email; //get_post_author_id();
	$avatar_folder_url = '/wp-content/uploads/avatars/'. $author_id;
	$avatar_folder_dir = $_SERVER['DOCUMENT_ROOT'] . $avatar_folder_url;
	$avatar_name = ( 'full' == $type ) ? '-bpfull' : '-bpthumb';
	$legacy_user_avatar_name = ( 'full' == $type ) ? '-avatar2' : '-avatar1';
	
	if ( file_exists( $avatar_folder_dir ) ) {
		if ( $av_dir = opendir( $avatar_folder_dir ) ) {
			while ( false !== ( $avatar_file = readdir($av_dir) ) ) {
				if ( preg_match( "/{$avatar_name}/", $avatar_file ) || preg_match( "/{$legacy_user_avatar_name}/", $avatar_file ) )
					$avatar_url = $avatar_folder_url . '/' . $avatar_file;
			}
		}
		closedir($av_dir);

		if ( $avatar_url )
			return $avatar_url;
	}

	return false;
}

Hope this helps to add this feature.

Best regards,
Jan