PastePal, quickly copy-and-save images
is an excellent idea, and a much needed tool!
How many times did I see Word documents containg just an image because people don't know what to do with images in the clipboard...
Luckily, we don't need image editing software (such as the marvelous Paint) any longer to copy-and-save an image. PastePal is a quick'n'dirty utility that saves images from the clipboard to a pre-arranged location in JPEG format, with a randomly generated filename (or one you specify), and can run a utility/script against the saved image afterwards.