it is, but a little bit of php coding and mysql can transform it into your own cover db. it is esspecialy usefull because of broken push to xbox function.
this scripts are just base, they aren`t ready solution.
presonaly i`m too lazy to install mysql, so i created xml files with favourites covers on my local server and used this code in cover.php:
if (file_exists('covers/'.$titleid))
{
include('covers/'.$titleid);
}
else
{
//request to xboxunity
}