Imagemaps are certainly a bit of a throwback to the old days of web design. I wasn't even around back then, so I had my boss explain to me what they were about. You'd have a <map> tag in your HTML that defined a set of coordinates with hrefs associated to them. Then you'd reference that map from an image tag, and the areas you defined would magically become clickable in the image. Wild stuff.
Anyway, it turns out: There are situations where imagemap-like behaviour can be useful today, and there's a super clean way of achieving it in rukzuk without going through the above craziness.