You're confused or you miswrote: 800 number owners pay for your calls, people with caller ID boxes do not.
So, do you think that the "privacy protecting 900 number" ($2/min) uses your number (remember that they DO have it) for privacy junk mailing purposes?
i realize that caller ID box owners are not paying for your call but this system was talking about 800 numbers two things i will grant 1) most 800 numbers are pro-watts or whatever it is and pay just one huge charge a month and dont deal with each bill seperately so they dont get charged for your specific call BUT it is a great way to get marketting stuff ive wroked for companies that do that 2) most peopel dont know that an 800 number isnt anonymous but that goes to educating the public and i really dont think the public cares enough to want to know