Here's the updated list of sites where you can find more information about variable information printing, direct marketing campaigns, etc.:
Deliver Magazine (USPS)
Direct Mail @ the USPS
Direct Marketing Association
PODi - Print on Demand Initiative
Caslon
InfoTrends / Cap Ventures
Direct Marketing News
Advertising Age
GAIN - Graphic Arts Information Network
Xerox (though much is buried in their LARGE site)
I update this list periodically - so if you know of a relevant site, please either submit a comment below or directly email me (katiek@ags.com).
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