One that appears in hindsight: In her very first post, Allie complains about how her depressed neighbor keeps turning to her for solace. But she admits that she usually just acknowledges how bad he's feeling and doesn't try to "fix" it—which is exactly what she wanted people to do when she fell into depression.
"Isabelle", particularly the second-to-last paragraph.
You wouldn't expect it, but "An Open Letter to my Boyfriend, the Serial Killer" is a surprisingly sweet post.
Bonus points for not having too saccharine of a moral at the end, but a simple, no-nonsense (and darkly comedic) moral that anyone recovering from depression can relate to: Maybe everything isn't hopeless bullshit.
"Menace" is a funny post, but the fact that it's her first non-depression blog post in over a year makes it this as well.