SnapNDrag is a free screenshot application for MacOSX. The reason why it’s so easy to use? It’s exactly what the name says. You snap the screenshot with a click of a button, then you drag the picture to save it somewhere. If you want to email the screenshot, then drag the picture to the mail program of your choice. You can basically do whatever you need to with this application for simple screenshots.
CoolOSXApps < YellowMug