I read somewhere that semantic web is an evolving collection of knowledge that cab be understood by computers. That understanding certainly implies that the vast knoweledge can be consumed and processed by computers for human benefit. Things like ticket ordering according with changes in your schedule, investment strategy adjustments, weight watching if you scale talks to your computer all can be done very intellegently utilizing the vast sematic web.
I find it very inspirational, but knowledge representaion schemes, ontologies, tools that extract and process data published on the web to turn it into semantic web take time to understand and digest.
What is RDF, what are some of the ontologies that are out there already, is any of it being used and how? I ahve a very practical approach to it, and it helps for me to see things applied and possibly take them apart. I will look for some of the current trends and practical developments in the forming field of the semantic web, and make some notes here.