From author's site:
Taking a few minutes to unbundle your DNS service from your ISP's Internet connection means a safer, faster, smarter and more reliable Internet experience for everyone in your household.
Start using OpenDNS! It's free.
* Parental Controls
Keeping your family safe online has never been easier. OpenDNS gives you more than 50 filtering categories to choose from. Simply check the boxes of the categories you want to block and watch your filtering take effect within minutes.
* Faster, More Reliable Internet
Rid your household of annoying, intermittent Internet outages. Switch to OpenDNS and immediately notice a faster, more reliable Internet experience. Join the millions who've already unbundled their DNS service from their ISP's Internet connection.
Registration:
not required