OpenDNS sounds like a very interesting service. Essentially, they provide out-sourced domain name servers, but ones with a series of clever and thoughful features added. I won't go into the specifics here (Wired has an article on the company with some specifics) but I am testing them out. Unintended bits are to be expected -- For instance, I just entered "slashdot" instead of "slashdot.org" and got an OpenDNS search results page instead of simply getting redirected to slashdot.org; though I suspect this is more about how Safari/local web browser works (presumably by relying on unkown server response from DNS to add the .com or .org versions of an address) than an intentional change on OpenDNS part. Would be a good addition, though.