One 'movement that I've been keenly watching is the growth of Microformats, embedding reusable data nuggets into the XHTML of a web page that both users, and applications, can understand. A new format that seems to making a rise deals with embedding geographical information into a web page. Attaching a Geographical location to a virtual URL is old hat (see GeoURL) but providing a visual, or intuitive format for the end-user is an interesting challenge. Hopefully this will make some more headway then simple, invisible, meta-tags from the day of GeoURL.