We use Skitch from Evernote for taking and classifying screenshots.
Founder & CEO - Planify
I use Skitch for screenshotting and editing images on my phone.
Founder - VentureOut
Skitch is a great timesaver for taking screenshots and quickly annotating them.
Founder & CEO - Museum Hack
Skitch is a free app that helps you communicate visually using annotation, shapes and sketches.
Visit the website: https://evernote.com/skitch/