I dunno, the "More Like This" is an AMAZING tool for someone like me, who has to search through thousands and even millions of images to find the proper pictures for reference and whatnot. There's hundreds of different possible keywords I'd have to search to find the images I need, and normally there was no way to search using "Images that are like this one". At least, until now. I can see how it's annoying for some, but at the same time, why they chose to add it. It's a feature that appeals to only a small group, that's true, but hey, I'm a part of that small group, so I like it! XP
That being said, I'm glad there's a way to disable it for those who DON'T like it. I've NEVER supported folk having to deal with annoying features just because they help a few people. Handy little script, and props for sharing it!