In 2007, Google acquired Jaiku. I have an account there, but I don’t use Jaiku actively. I don’t know why, but I just felt that this service is not for me.
This month, JaikuEngine was released as an open source project. It’s available at Google App Engine. Google will not develop Jaiku code base and hand it to the community. Is it because Jaiku is not popular — compared to other microblogging services like Twitter? Or, Google wants to stop its development because Twitter is more promising?