Example: http://www.solar-shop.us/ADDRESS-OF-PRODUCT?sp_id=YOUR-USER-ID
Another example: http://www.solar-shop.us/catalog/solar-charger-cell-phone?sp_id=YOUR-USER-ID
One more example: http://www.solar-shop.us/catalog/solar-charger-cell-phone?sp_id=61 - if your user id is 61!
