The shopping cart system using PayPal is effortless, having used etsy now as both a buyer and a seller. Very impressive setup and its been an interesting foray into the e-commerce world. My background in information retrieval has been useful in the tagging of items for the etsy database and the importance of relevant keyword in the descriptions. The hardest part has been producing quality photos which are both artistic and display the items to their best advantage. I've still got a way to go there.