A few examples of sites that have this are Craigslist, Reddit, Facebook Marketplace, and Zillow. Frankly it's very commonplace and there are countless more examples.
When you do a search, there is a button next to each listing that lets you block or hide the specific listing from being shown to you again. That's it. Every time you perform a search, that listing won't appear anymore. You already filtered it out of any relevance to you, so you don't have to go through that work again. And if you change your mind, you just go to the "hidden" tab, and it will show everything you've hidden and let you unhide it.
Would be very convenient if I could just block certain mods from my list. I know I will never download them, so why should they clutter my search?
