There isn't much point to casually browsing the site right now - I can see that someone else has achy feet, but I get no deeper insight; no comment explaining their situation nor comments from others that may have been similarly encumbered in the past.
Additionally, I only really share my health concerns with one person that isn't a doctor, and she lives with me.
The faces seem like a distraction when sharing anonymously. Many of them don't have an intuitive meaning, so I figure they're just for fun.
Also I couldn't figure out how to login or register on the site. I found out it's not actually required to share a health status, but since you listed it in the Show HN post, I looked around for it.
I do like the look and feel of the site - very straightforward and great colors, fonts, and design.