Some obvious uses for the internet that haven't been done yet (or, have been done but haven't caught on)

• governance
• p2p versions of: google calendar, facebook, twitter, google
  • see also FOAF
• better way to express opinions on the web
• argument mapping
• collaboratively filtered news
  • see also Findory
• some sort of method to pay content creators
  • Iterated Giving can be used for this (todo)
• automated business card/email addressbook push update from contacts
  • the xdi folks talked about this