Depression, cutting, eating disorders. A trend?

[Grace]

I've noticed that a large number of people in my age group like to appear mentally ill. They post pictures of self harm and depressive quotations on their tumblr, facebook, twitter etc.
Some of them even dare to come to school with their fresh cuts visible for everyone to see.

I myself suffer from depression and I used to cut. I would never in my right mind be open about it. Even when I used to cut, I soon came to realize that cutting on my arm was too much of a risk and decided to go over to other body parts.
It makes me slightly angry when I see this and it got me thinking; are these people actually suffering, or is it just a trend?