I attended this session at the Cafepress Connect user conference in San Francisco last weekend. In it we learned about third party (not created by Cafepress) tools that are available for affiliates to use to easily create niche shops and sell T-shirts and gifts for commission.
Check out Adam's Instant Cafe, now available through his site. It's a pretty neat tool. Basically you type in a few variables (shop ID, or image tag), wait a minute, and it generates code for a whole site, ready to sell Cafepress merchandise with your pid# (personal identification number).
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