Recently dug out and was reading PhilipAndAlexsGuide. Here are PhilipGreenspun's four types of commercial web-sites :

  • 1) Sites that provide traditional information. ie content-publishing.
  • 2) Sites that provide collaboratively created information. ie. everything that is currently called SocialSoftware and BroadCatching sites. (NewMediaIsASymmetricalConversation)
  • 3) Sites that provide a service via a server-side program ie. WebServices.
  • 4) Sites that define a standard enabling a consumer to seamlessly query multiple databases. ie. information aggregators, search engines.

Essentially this is the idea which has now become the fashionable pillar of WebTwoPointZero, known as MashUps