If you want preconfigured adult filtering, then the "Familyshield" openDNS may be better
http://www.opendns.com/familyshield
It uses different server addresses, and actually tends to test as being faster than ordinary opendns.
Also, no need for it to track YOUR settings, since the filter options apply to the server, for everyone.
FS addresses
- 208.67.222.123
- 208.67.220.123
OpenDNS standard addresses
208.67.222.222
208.67.220.220