Skitch (SHOW) - Draw and annotate over saved images or over photos you take with the camera. Skitch is extremely useful for annotating an image and then hosting it so it can be imported into another website.
Get Skitch - Snap. Mark Up. on the App Store. See something that sparks an idea? Use Skitch to snap it, mark it up with simple tools, and send it on in an instant. Your bold ideas stand out even brighter with Skitch.