volume4 writes "The switch has been flipped and Jaiku has been moved to App Engine. Google will no longer be developing Jaiku, so the code and the future of Jaiku is in the hands of the open source community. From the Jaiku blog: 'Today, we are open sourcing the Jaiku code base under the Apache License 2.0. The code is available as JaikuEngine on Google Code Project Hosting as of now. Anyone can set up and run their own JaikuEngine instance on Google App Engine.'" We discussed Google's purchase of Jaiku in 2007, and their subsequent decision to halt development a few months ago.