"PhoneDog.com is the creation of some phone company employees who realize that most people need a little help getting beyond the big-name long-distance firms. They think some of the less-known companies that don't have the marketing dollars to call you every night could offer the biggest savings.
From PhoneDog's home page, you can go into your state page. You'll get a list of 20 companies, which you can rank by potential yearly savings, in-state or out-of-state rates, or universal service fund fees. The listings include company name, fees, potential savings, rates and contact information."
Read the story from here. (PDF format)