What are the benefits, from your experience or knowledge, or OpenDNS over the ISP's default DNS servers? Would you recommend to always use OpenDNS, never, or what are the factors? A key in my mind is the speed "benefit." How can that be best tested and measured? Are there any reliable generalizations that can be used as a "rule of thumb" to know when to use OpenDNS or not.
I have read the OpenDNS site and a number of others so don't just post links. I don't mind them as a reference or resource with more info but want your expertise too. Thanks for your help and time.
Let me know if there is a question about this.