A while back I was playing with microformats, and changed my contact details in the sidebar of this site to use the hCard format.
It was all a bit academic, until recently when I was contacted by the virel.org spider to say they had picked up my details and automatically included me in their search engine.
It’s interesting to see these things slowly starting to be useful in a wider context.
[...] Rowan’s blog reminded me that I had been meaning to update my contact details on this blog in the hCard standard. In case you have no idea what hCards or microformats are, then read these two articles for more info: Wikipedia, Microformats. And in case those articles are too technical, then all you really need to know is that the hCard format makes it easier for computers to understand your contact details. [...]