While I appreciate that you have upgraded the Drupal installation to version 7, I would respectfully request that you also offer the 6.20 version, as version 7 has not completely ported over all the modules that I use in my Drupal sites.
I understand that you might think that offering the latest only is the proper upgrade path. In normal circumstances, that would be true. But in the case of Drupal, there's still work to be done before I can take my sites on the upgrade path to version 7. It's much easier to use your services to update the CMS software than it is to individually upgrade them.