Each site in that review list is then looked at by N2H2 staff to determine if the site should be blocked. Only about twenty-five percent of reviewed sites are blocked. New sites appear on the Internet daily. N2H2, Chorus' partner, has coverage of the Internet that is unmatched in the industry. They have a department whose sole task is to create the block-access lists.
Employees work seven days a week reviewing and rating sites.
New filter lists are created every day. The lists are downloaded into Chorus' database every evening after midnight. If someone needs to go to a site that is blocked by Chorus, they may subscribe to Chorus' Enhanced Package and use an authorized user override feature. This feature allows an individual with a username and password to bypass the filters and get unfiltered access. This override option lasts for a specified amount of time, and then the connection reverts back to filtered access.