It sounds decent (but would still like more detail about how it content filters with DNS). But my concern would be that the average potential customer isn't willing or able to go change their DNS settings. A lot of parents we know don't even know their router password anymore.

I think there's an untapped gold mine there for the first company that comes out with an idiot-proof content filtering system for parents and gets in into Walmart, Staples, Best Buy, etc. I'm thinking either a replacement wireless router or a wired filter that goes between their current wifi router and broadband modem. It's got to do as much auto configuration as possible. Or if Verizon or other broadband providers would just offer it as part of their service package. For another $19.95 a month they'll proxy filter your internet content.