The reason I ask is because I love sites like Speedhunters, not only because they have great articles, but they have tons of gorgeous, high quality images for each one. It's one of the things that keeps me coming back, because I feel it adds to the value.
I would love a tag that let's people know when an article has great images to go with it. I was personally thinking of using #magnificentimages myself if there isn't something already. However, I don't want to try and start something new if there's already something in place.