Categorisation by Indexment
Use just about all of the News and Sport RSS feeds to watch stories as they are posted to different indexes. Use this to generate extra categorisation information about stories (this story is about 'business' and 'technology')
Although the underlying idea (which is Nico Flores's) - derive categorisation information from the indexes which a story inhabits, and the length of time it stays there - is interesting, this implementation idea (which is mine) stinks. It would (probably) require downloading the RSS feeds far more frequently than the BBC would appreciate, in order to capture enough information. I haven't checked.
This information should really come from News' content production software, but that's not going to happen tomorrow.