A lot of people seem to find the "An Hero" meme completely hilarious. For example, a friend of mine was going though a really hard time... He was becoming suicidal, and all that my friends could say was "become An Hero."
I don't find it funny. But it's fine as long it's not used against people who are actually having suicidal impulses, and as long you know that the original of the joke is a real problem, not some attention seeking bullshit - in most causes.
That's why, on the internet, it's a good idea to reserve one's own emotional problems to sites and forums that actually deal with the specific problem.