Protopage gorgeously designed Ajaxy sticky notes website #
MyProgs collaborative list of applications people use; like Del.icio.us for software #
Etsy nicely designed shopping site for buying and selling handmade stuff (via) #
Peekaboom Carnegie Mellon's multiplayer game used to train computer vision algorithms #
A Rocket to Nowhere Maciej Ceglowski's excellent article on the problems with NASA's manned space flight program #