Some say they are a waste of time and space
How to Disable Windows 7 Desktop Gadgets
The Gadgets Platform is an application that runs Windows Gadgets on your desktop. No longer confined to the Sidebar as in Windows Vista, Windows 7 gadgets roam freely on the user's desktop.
However, there are times when it may be appropriate to disable the Gadgets Platform and thereby prohibit the use of Gadgets. Learn how to disable the Gadgets Platform in Windows 7.
First introduced in Windows Vista, the Gadgets Platform allows users to float small applications on their desktops to keep important information at their fingertips. Unfortunately, many Windows users do not find Gadgets to be an important part of their daily computing.