Google Maps’ API now officially supports Google Sky imagery. HeyWhatsThat takes quick advantage of this to make a planisphere tool for the web. Alasdair Alan ar The Daily Ack, meanwhile, spends a productive weekend playing with the API to 1) make it compatible with PLASTIC, an emerging protocol for communiication between astronomical applications, and 2) make it work on the iPhone. All very impressive!
[Update 2:40 UTC: The possibilities are only just now beginning to percolate through: In a few months, when the iPhone SDK comes out, why not view astroreferenced news on your iPhone with Google Sky, and then (here is the cool bit) control your telescope with the iPhone to get it to view the location in question automatically!]