One of the most important--and too often forgotten--pieces of a successful API is promoting what developers have built. Doing so should be a win-win, as both platform and developer should benefit from third-party apps being discovered by users. Location-sharing service FourSquare just re-vamped its application gallery and now any developer can be included.
After much anticipation from the Mac community (both users and developers), Google has released the Mac version of its Google Earth Browser Plugin. As with the Windows-only previous release, the plugin allows users to view Google Earth within their web browser.