The Google Maps API Developer Relations team will be holding office hours every couple of weeks in Google+ Hangouts. The next three are:
Feb 15th 10am Sydney Time with Chris Broadfoot, Luke Mahe and Dave Holmes
Feb 29th 10am Pacific Time with Andres Ferrate and Kathryn Hurley
Come by, ask anything related to Google Maps development. That includes KML and the Earth API. For more events information, check out the Google Developer Events Page: