I'm starting working on a paper that will probably include a sample of Web 2.0 companies, so I went searching for a good list of such companies.
I didn’t find the list per se, but I did find another way to get names
Web 2.0 Name GeneratorThis website can be used to generate the name of your new Web 2.0 company, and it also allows you check to see if the domain is available. They also recommend Dot-o-mator as a way of generating domain names. Given the cybersquatter problem, both offer a useful solution to a real problem.
Some sample names generated for the Web 2.0 companies: Chatterfire, Jaxlist, Wikizzy. All seem plausible, and none are worse that the real names of Web 2.0 companies.