Here are some more helpful links:
http://lifestyle.ezinemark.com/communication-between-parents-and-teens-55e5fcf4c2c.html
http://parentingteensadvice.blogspot.com/2010/10/improve-communication-with-door-openers.html
http://www.getsetplan.com/teen-communication.html
http://www.pnj.com/article/20101016/LIFE/10160305/MOMLIKEME-COM-Talk-with-your-teenager
http://highschoolmediator.com/tired-of-not-being-able-to-communicate-with-your-teen/