You know it would probably be an interesting topic to discuss: Which therapies for depression and similar conditions *are* most consistent with Epicurean philosophy?
I took a look at the Getty Aphrodite website. From reading the tags, I get the feeling that writing on the tags and posting them actually could be quite cathartic. It's not as if one's prayers would be answered, but I can see how doing that could help a person to release some pent up emotion. It might have something in common with Catholic confession or Tibetan prayer flags although I don't know much about either of those.
Catholic confession
I'm not entirely convinced that the practice of classical Epicurean frank speech by teacher and student didn't influence Catholic confessional practices. (I know, I'm exhibiting Dewittean tendencies here!) Descriptions in Tsouna's The Ethics of Philodemus sound very confessional-like.
