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Phishing Protection

We operate PhishTank.com, the world's most trusted source of phishing data. We
integrate that data into an intelligence feed on our DNS servers to keep everyone on
your network safe from phony sites trying to steal personal information.

Adult Site Blocking

Safeguard your kids, protect your students, or limit your corporate
liability by blocking adult websites. Our adult site blocking solution can
be deployed in minutes and provides granular levels of blocking. Hundreds
of school districts are already using OpenDNS to achieve
CIPA compliance.
Did we mention it's completely free?

Take Wikipedia as an easy example. While it is often criticised for pandering to the ‘wisdom of the crowds’ – that is to say, whatever the majority and those with too much time on their hands believe is true tends to become ‘wiki fact’, more considered opinions are edited out by the ‘crowd’ – just look at the immense resource it has become.

The great libraries of antiquity, lovingly put together over decades, have nothing on Wikipedia, a project that has harnessed the knowledge of the global community, not just a handful of ‘wise men’, and which is available to everyone, everywhere for no charge.