Dickeson--Where Does e-Commerce Fit?

So, again I ask: "Is your printing business selling a product or providing a service?" What do your customers think? Commodity or service?

Here's what's troubling me at the moment: What value-added function do Impresse, Noosh, PrintBid and perhaps others (by the time this copy of Printing Impressions reaches your desk) provide? These companies are part of what we call e-commerce; businesses doing business on the Internet.