A little while ago, the "General" rating got split into "General" (strictly for all-ages, no funny business allowed) and "Sensitive" (for posts too mature for the general rating yet not "adult" enough for the questionable rating), old posts defaulted to "sensitive" IIRC.
Sure did! Did you have fun at school? Cheeeeeen! We came to pick you up! Ran-sama!
And Yukari-sama...