What was the first e-commerce site?

A while back, I was trying to research what the first web-based application was (for a piece on putting Ruby on Rails in context of previous web app development technology). Paul Graham claims it was ViaWeb, but Amazon.com (sometime in 1994) launched before ViaWeb. Maybe Graham means first end user application, but I think Amazon still counts because it was a dynamicly built site that users could interact with.

In the end, I couldn't find much about what the first web application was.

Now there's a thread on Joel on Software of people trying to figure out the first website to offer internet purchases (closely related topics, I'd say). Some other contenders: CDNOW (1994, but could you buy things?) and NetMarket (1994, first encrypted credit card transaction).