Put the PrtScn (Print Screen) button to actual use. LightShot is a tiny utility that takes over that button. Push it and you can pick what part of the screen to turn into a screenshot, plus annotate with tools like text and arrows. It's also available for leading web browsers to capture what's on a page. Once captured, you get choices to save to a file, the clipboard, the cloud, social networks, or to just search for similar shots in Google.