Mighty Monitor 3.0 is a dashboard widget for Leopard and Snow Leopard that shows you the battery status of Apple Bluetooth wireless devices, including the Magic Mouse, Magic Trackpad, and brushed aluminum wireless keyboard.
TwitterGadget is a clean, robust, web 2.0 style client for Twitter.com, designed to submit status updates to Twitter via your iGoogle homepage or Gmail Account.
T. Nelkner. Best Practices for the Knowledge Society. Knowledge, Learning, Development and Technology for All, volume 49 of Communications in Computer and Information Science, Springer Berlin Heidelberg, (2009)