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But wouldn't it be fun if the real reason that they are distributing accounts the way they are is to build whitelisting into their system?
About 14 months ago I started using Knowspam for email whitelisting .
I could come up with a number of other ‘what ifs’ that whitelisting and challenge-response services would block.
Not all users are known by the people who invited them, but certainly some fuzzy whitelisting could be utilized to improve their spam filtering.
First we've made everything much more secure by default using a new option we call ‘emergent registration’ or ‘automatic whitelisting .’
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