You can pay for a basic license of OpenDNS and "null route" (to a block page) ads at the device / network level. Those preferences get synced to anycasted DNS r

You can pay for a basic license of OpenDNS and "null route" (to a block page) ads at the device / network level. Those preferences get synced to anycasted DNS resolvers and performance hits are negligible. Some ideas here, but it's pretty straightforward and functions just like their adult content blockers: http://iradar.blogspot.com/2011/07/useful-free-tool-use-opendns-to-block.html http://iradar.blogspot.com/2011/07/useful-free-tool-use-open...