
Kubuntu ships with the Microblogging Plasma Widget which supports both Twitter and Identi.ca which is enabled by default. If you have removed this widget and would like to add the desktop widget back, simply click on the desktop, and select . Simply click and drag the widget to the desktop and configure it for either Twitter or Identi.ca.
Another application that is available in the repositories is Choqok. Choqok supports both Twitter and Identi.ca as well, and sits in the system tray.