Robert Scoble has a nice breakdown:
1) News gathering (camera phones, recording devices, portable computers, etc).
2) News propogation and comparison (email, instant messaging, chat, newsgroups)
3) News production (photo editing applications, word processors, content management, er, blogging tools)
4) News distribution systems (databases, server farms, web servers)
5) News reading (Web browsers and RSS aggregators)
6) News finding and trend analysis (search, link analysis, pattern analysis)