Simple imgur uploader. 

To take a fullscreen screencapture, hit PrintScreen and double-click on the Program icon on the notification area/systray.

To take a screenshot of only a particular area, right-click on the program icon, click on selection mode and draw a rectangle across the area which you choose to upload.

To get a thumbnail link, right click program icon and click on Copy Thumbnail Link

http://sathyabh.at/2010/02/25/take-a-screenshot-of-your-desktop-and-upload-to-imageshack-easily/