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Once you've bought something, and assuming you don't opt out, O'Reilly email details of these offers to you - that's possibly where the OP heard about it. They
by danparsonson 16y ago
Once you've bought something, and assuming you don't opt out, O'Reilly email details of these offers to you - that's possibly where the OP heard about it. They seem always to be generally available via the home page.