Calibration and publication of user activity on a computer implemented social network is provided. Activity signals of user activity is measured by an activity monitor and calibrated by the user. The calibration includes assigning an activity signal with a personalized identifier for the activity for comparison with future measured activity signals. Near real-time publication of the activity on the social network allow users of the network to timely view user behavior. The publication on a social networking website includes the identifier if the activity has been calibrated. By calibrating and publishing user activity, users can connect to others based on the activity. The publication can be on newsfeed on a user profile for friends of the user to view. A user and the user's friends can communicate with each other, which allows the user to receive motivation from the friends and be accountable to the friends.