Recently Google introduced a new Google Talk Gadget which could be embedded onto any blog or webpage. Making use of this gadget, ErickXavier has coded a Greasemonkey script which adds a nifty Google Talk gadget within Orkut Sidebar, which allows you to stay intouch with your buddies without installing Google Talk.

Installation Instructions:

Just like any other Greasemonkey script, you need Firefox and Greasemonkey extension before attempting to install this script. Click here to install the script