Accesses the CafePress API via shortcodes to display products from specific store sections. Site hosting needs PHP5 with XMLDOM enabled.
No. You can use this to sell others' designs via the CafePress affiliate program without being a shopkeeper.
If you are a CafePress shopkeeper, you can show your own products and link to your store without having any affiliate account. Simply leave off the affiliate information and it will link directly to your shop.
No, all revenues and clicks belong to you.