America Runs out of Internet Addresses

Two days ago, Google announced a new Google Apps feature to allow administrators to control what YouTube content is accessible to their users. This is a replacement for the old YouTube for Schools service, which Google withdrew to new signups over a year ago.
As we've discussed before, we've been developing a few improvements to the Iceni's powerful hierarchical grouping system. You can read more about the existing group configuration system in the knowledgebase article. The group configuration system has proved extremely successful, but we wanted to extend its flexibility whilst keeping it very understandable.
Over the years, the Iceni's hierarchical grouping system has proved itself to be extremely flexible and easy to understand. You can read more about the group configuration system in the knowledgebase article. However, it has always been limited in how fine-grained the configuration can be - since the configuration is applied to whole groups, adjusting the configuration for a single user required a group to be created just for that user.