Semantic web

Like many others, I have been intrigued by the notion of a semantic web and looked forward to its arrival. Well, it may be a small start, as it is currently primarily limited to Wikipedia, but I liked Powerset - a semantic search engine - when I tried it using a search on 'digital literacy'. If you are not clear what a semantic search engine is, then this overview is helpful. I can see that if this develops beyond Wikipedia, it will become increasingly useful. Now all we need is the ability to move the same avatars across different web spaces and maybe we will be seeing Web 3.0 after all?