Great idea! Colleges keep track of any contact a student has made with them (i.e. campus visits/tours, college fairs, meeting with college admission reps, phone calls, etc.). If your acceptance is "on the fence", having documented contacts with the college shows an interest and in some cases, can be enough to push the decision in your favor for acceptance. Be sure to record your likes and dislikes about the school, pros and cons, and general feelings.