Yes great idea Migeru. I'm not sure I understand all the technicalities involved here so bear with me. Is there a way, if one creates & agrees on the basic key categories, to the push the work of categorising into ETwiki to the actual diary or story author as is done with the Technorati tags that are now being added? If not could authors add tags for ETwiki & then front pagers follow up with the actual linking to ETwiki in batches by etwiki tag name or is that a lot of work?

Another option is to use the Technorati tags to do this. That would work if it was possible to search those tags just for ET postings. However, I could not figure out a way to do that. Again to make this work it might help to come up with a small number of key categories  maybe one geographic & one topical. For example:

• Africa, Europe, Asia, North America, South America, Middle East and
  
• Energy policy, Economics, Travel, Politics (these topic categories aren't great got to think about more useful and easy to identify grouping).

Then again am I going off on a wild goose chase? Has this already been done and failed? There must be precedents out these? Help librarians, or anyone else for that matter, help!!!  Or am I the only one who think this might be worth the trouble (maybe because I don't realise what trouble it is)?