Jaiku is a site run on Google appenine powerby Google

Jaiku's goal is to bring people closer together by enabling them to have conversations. It offers a way to connect with the people you care about by sharing updates with them on the Web, IM, and SMS - as well as through third-party applications built by other developers using the Jaiku API.

Jaiku is a part of Google. The service is maintained by volunteer Google engineers on their spare time.

Visit it now http://www.jaiku.com/