I see RHSBL reputation systems of the future providing richer data:
domain: yahoo.com
born: 199501
total: 4.3E12 reported messages
spam: 1.2E3 reported messages
ratio: 2.8E-10
domain: superspammer.net
born: 200303
total: 6.3E7 reported messages
spam: 3.4E7 reported messages
ratio: 0.53
The Spamcop BL has been trying to do that for ages, without a whole lot of
success because the total numbers are impossible to get.
Credit bureaus can compute useful scores because lenders send them lists
of all of the customers, not just the deadbeats, so the score really is
based on your relative number of good and bad debts.
Spamcop tries to estimate the total nummbers from the number of queries on
the BL relative to the number of spam reports, but as we all know, both
the numerators and denominators can be a lot way from reality. Or look at
senderbase, which is about as good as your're going to find, but people
who should know say that their volume estimates aren't great either.
And finally, I was going to point out that you could encode reputation
numbers in DNSBL A records now if you wanted a better than binary
reputation system, but Seth beat me to it.
Regards,
John Levine, johnl(_at_)iecc(_dot_)com, Primary Perpetrator of "The Internet
for Dummies",
Information Superhighwayman wanna-be, http://iecc.com/johnl, Sewer Commissioner
"I dropped the toothpaste", said Tom, crestfallenly.
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