Semantic Blogging
A clever man once said you don’t really understand something unless you can explain it to your grandmother. Steve Cayzer of HP’s SemanticBlogging.org, understands it. And explains it in 6 pages that grandmothers might be able to understand.
Trust me 
Have a read of this - Semantic blogging and decentralized knowledge management
Looks interesting, but it also looks like you need an account to access the article.
Hi Martin,
At the moment I don;t think you need to register, though this may be me accessing it from a .ac.uk domain.) The pdf link at the top of the page should give you it.