Another google acquisition called Jaiku - an activity stream and presence sharing service that works from the Web and mobile phones. An FAQ is set about this acquisition.

Jaiku is joining Google. While it’s too soon to comment on specific plans, we look forward to working with our new friends at Google over the coming months to expand in ways we hope you’ll find interesting and useful. Our engineers are excited to be working together and enthusiastic developers lead to great innovation. We look forward to accomplishing great things together. In order to focus on innovation instead of scaling, we have decided to close new user sign-ups for now.

Sign-ups was also limited with this acquisition that now by an invitation only. Check Jaiku blog for more information.