Blocking, lowering, raising, and pinning domains has been one of my favorite Kagi features. Some of my block highlights include pintrest (and all it's other TLDs) and any AI trash articles I find when looking up something programming related. I lower Quora and Medium. I raise good references like docs sites, Wikipedia, ArchWiki, etc.

Not only are the stock results better: I also get more control over what I see and how it's presented. Huge fan.