The Internet is constantly growing and new ad servers (computers on the Internet that "serve up" advertisements that appear within web pages) are brought into service regularly.

Please see "How Do I Update Ad-Free" http://www.netnanny.com/support/kb.php?id=501000000000RFD for keeping your copy of Ad-Free current. You can add to the list of advertisements to block, by entering the URL of the ad into Ad-Free and assigning a status of "block" to that URL.

Also, a small number of advertisements are delivered from secured web sites to the one you're currently visiting. At this time, Ad-Free is designed to not interfere with these secured communications.