* Time-based (day/week/month/year/decade); Brief summaries of the news items of the day/week/whatever.
* Sections; broad, persistent areas of news - politics, war, media, etc
* Threads; this is where most of the actual content would reside. A "thread" would represent a discrete story; the Washington Sniper, the US 2002 mid-term elections, the UK Tory leadership uncertainty of Autumn 2002.
I would love to see a wiki variant used for reporting/discussing news. I feel that the single thing most lacking is a filtering system. See RatedChangeAggregator for more on why, and for what I propose.
See also TimeStream. TimeStream is a visionary idea for how cultures should deal with news information. This page is about something that would be a wiki or a wiki derivative for news. So, this page is confined to wiki-like things, and is less visionary than TimeStream.
See also WikiLog. A WebLog is chronologically ordered, and hence seems appropriate for news. However, a WebLog, and a WikiLog, can be used for more than just conveying news (for example, they can convey personal ideas or be used for general discussions). By contrast, this page is specifically about a tool for transmitting news.