"I Did This" is a way for you to track your progress and to show off your skills and accomplishments to other members on Grokker and Facebook (note that Grokker will never post to any social network without your permission). When you complete a video -- even if you haven't mastered it yet -- use
"I Did This" to indicate that you did that video. This will update your Grokker Calendar which you can see on the homepage or in your profile. Days when you did an "I Did This" will appear as coral colored circles on your calendar.