The Semantic Web has been coming for years. However, as with all technologies it has needed something to push it over the edge into becoming a requirement rather than a nice to have. Advertising is frequently a catalyst for change and this time Semantic Advertising is the catalyst that we have been waiting for.
This blog is not highly technical or long, but I think that it gives a real world example of why 2010 will be the year of the semantic web and the year that semantic technologies really take off.