Over the last few years, the big bang of the World Wide Web has shaken the realm of commerce. Today on the Internet, you can get everything from phone numbers and dancing babies to golf clubs and custom-built computers. Some of these Web sites are businesses that found their genesis in the advent of the Web itself, while others are longstanding companies trying to adapt to the reality of this new digital marketplace. Who will survive and who will be rendered extinct? That's what Evan I. Schwartz tries to answer by dipping into the Internet's "primordial soup" to discover the characteristics of the winners that will eventually emerge.