What would a site like this gain its owners? I can only think there's some way to make money off it, but it seems unlikely to draw many eyeballs.
click analytics? wonder where all the topic-related images are coming from?
That link goes to a post that takes content I submitted here just a bit ago and is republished without any attribution to HN, and in fact it even has a link to re-submit it here to HN, and I suppose attribute it themselves.