My reply to post in link below by HuffingtonPost:
This is really great advice to parents! As a student I definitely think that parents shouldn't be too involved and turn into "Helicopter Parents." Staying a bit far will allow the students to grow and become more independent. However, I must add that sometimes a bit involvement is not bad and very much needed. Thus, I like that you added "We Are Here for You" on your letter to your son. I think no matter how independent we become in college, it's nice to know that if things get too complicated we can turn to our parents for help.
Read the Article at HuffingtonPost