Also we'll have to add reporting for specific search terms. We do have a NSFW filter on by default, but there are often things that skirt around the rules while are hard to filter for.
I find it a amusing that the site seems almost eager to suggest related terms that it then refuses to generate images of.
We're using a synonym API that's separate from the image summoning. Basically our filtering happens after the synonym API, but before the image summoning API.