Via the Open Geospatial Consortium’s Mass-Market-Geo mailing list comes an appeal to collectively track the discussion on KML’s further development (now under the aegis of the OGC). Tag a relevant page with “ogckml” on de.icio.us or Technorati, and it will show up on KML Talk, part of the OGC Network site.
One person who’s been blogging up a KML storm is Andrew Turner over on High Earth Orbit:
Also via that tag comes a page of musings by Google’s Gregor Rothfuss on using Google’s GData API as a way of updating KML feeds.
Essential reading, all of it, if you want to influence how KML 3 will function.