I don't know how to do percentages but the above clearly shows explicit posts are a minority here, so yeah. Danbooru is not a porn site (shocking, isn't it?).
4shiki said: Danbooru is not a porn site (shocking, isn't it?).
That would be Gelbooru, right? I mean, that one actually has ads for porn sites... but often has awesome (safe or not) pictures that I don't see uploaded here.