Padvance takes a look at Evernote's Skitch app for iPad: "For business and productivity purposes, Skitch for iPad is great for snapping screenshots of a web site or product and adding notes to them. Skitch images can be saved to Evernote, saved to your camera roll, sent via email, or posted as Tweets. There are all sorts of useful applications for this.
Of course Skitch can be used for fun as well. You can snap a photo or take one from your gallery and import it into the app. From there you can add notes, draw mustaches and/or devil horns, etc."