Greenshot is a light-weight screenshot software tool for Windows
From https://download.cnet.com: "When choosing a free screenshot tool, consider why you're saving screenshots and what you need to do to them. It must quickly and easily capture all or part of your screen. You should be able to obscure, blur, annotate, or highlight parts of the image as you create it. Finally, you should be able to save or export your screenshot just as effortlessly as you created it, including uploading it directly to sites such as Picasa using plug-ins. That describes our new favorite screenshot tool, GreenShot."
