Google Earth Hacks, a great repository of placemarks, layers and 3D models, gets a host of new features: User file ratings, top submitters, categorization by country or US state, advanced search and more.
They’re also on the look-out for new feature requests. Here is one: How about linking the images associated with file downloads of placemarks to their respective spot in Google Maps, so we can preview the placemark if we’re not near a Google Earth. If Google Maps-oriented sites can re-orient themselves to provide KML, Google Earth-oriented sites could easily do the same and offer linkage to Google Maps.