The DNS Route to Scam Protection Online.
When you type in ‘www.scammingsite.com’ on your browser, a lookup is performed to translate the domain name into a unique address (IP Address) that all networked computers understand and which contains the path to the right server.
Your ISP will have given you two longish ‘numbers-separated-by-dots’ (eg. 207.44.123.28) to type in to your Network Settings. These are the Domain Name Servers (DNS) that your computer will use whenever you ask to go to a domain name.
Right? Well, never mind, just trust me on this one.
Wouldn’t it be great if, when you did the lookup/translate part, the result was filtered for Scams/Profanity/Pornography/Crime/Violence etc etc?
Well, by changing the DNS servers you use, you can have this great feature – for free, I may ad – and you (and your children/employees) can surf a little easier. No software to download, no subscriptions, no spam – it couldn’t be easier. Free, simple to do, free, great protection …. 
what more can I say other than if you don’t believe me, Click this button to find out why you need to change your DNS servers NOW!
(or, you can just change your DNS servers to 208.67.222.222 and 208.67.220.220 and get on with your life)
BTW, the same people who run OpenDNS.com also run an Anti-Phishing site called, amusingly, PhishTank