I use uBlacklist with this filter and that generally keeps the repeat offenders at least out of image search, but clearing out every SEO-spam print-on-demand mimc-site was already a game of whack-a-mole before consumer LLMs became a thing; I imagine now it’d be like playing whack-a-mole with a hydra. Still, it does at least help.
Search Engine Optimization. Basically gaming search engine indexing algorithms so that your content appears more “relevant” (read: crammed full of as many keywords as possible) and thus higher up on search results, usually at the expense of having, you know, actual content worth reading.