An anonymous reader writes to let un know about a story up on the Experimental Aircraft Association site about a new kind of blimp. From the article: "Alberto, whose name pays homage to Brazilian aviation pioneer, Alberto Santos-Dumont, is 102 feet long with a 70-foot diameter and uses hot air rather than helium for lift. Its innovative foldable frame (much like an giant umbrella) creates structural support of its hot-air envelope, and it has a fly-by-wire vectored thrust steering system. Alberto is a hybrid; a hot-air balloon with aluminum ribs that looks more like a blimp, but with a tail propeller that gives it directional control." The home site of the blimp's developers has a timeline, photos, and a video of the blimp in flight.

A large number of readers wrote in about IBM suing Amazon over commerce patents. The Ars Technica coverage linked is one of the few sources that goes beyond the brief AP or Reuters stories that everyone is running. Here is IBM's press release. Some of the patents in question go back to the 80s and they do seem to pretty much wrap up the idea of online commerce, if they prove valid. IBM says many others are licensing the patents but Amazon won't give them the time of day on the subject.