This is perhaps the best way of summing up
the Semantic Web -- technologies for enabling machines to make more
sense of the Web, with the result of making the Web more useful for
humans.
Technical peeves aside, the value of the Semantic Web is to
solve real problems in communication. First and foremost this means
radically improving our ability to find, sort, and classify
information: an activity that takes up a large part of our time.
This section addresses some of the most important technologies for
constructing the Semantic Web.
Perhaps surprisingly, a powerful tool for the construction of the
Semantic Web is HTML itself or, more properly, XHTML.
clipped from: www.xml.com