I think the article makes it pretty clear why suburban is in the title. The author relates the topic to her youth: "suburban life often felt stifling", for exam

I think the article makes it pretty clear why suburban is in the title. The author relates the topic to her youth: "suburban life often felt stifling", for example. The link for her is the way American suburban culture involves distance and pretense, the keeping of secrets you may not be able to share with anybody. Something that PostSecret provides an outlet for.