Joe Clark points to the oh-so-handy Dublin Core Template. Adding proper metatags to your page couldn’t be much easier, ‘cept for the lack of XHTML support.
In his Dubliners he correctly mourns the lack of Dublin Core metadata in the world. And while his idea of a self-organizing-web-through-metatags theory is fascinating, I don’t agree with his related assertion that Google is a monopoly. Google is just now going mainstream (I recently heard Jim Lehrer on The News Hour joke about finding some info using Google). At one time Yahoo! was the dominant engine, now they’re a Google customer. If Google can do that, so can someone else. If Paypal can beat MS at the payment game, then anyone is vulnerable. Personally I’m rooting for Teoma, if only they’d make the logical next steps.