SearchResearch Challenge (10/9/24): Finding similar content?

 When you like something... 

P/C Gemini. [create an image of a hall of mirrors with trees and mountains]
... sometimes you want something similar--not quite the same thing, but something that's close, but perhaps with a slightly different take.  Maybe something that's a refracted / reflected / slightly transformed version of your original idea.  

This happens to me when I'm researching a topic and want additional information that's not just a duplicate of what I've already got.  

And this is our Challenge for this week: 

1. How can you find related sites (or content) to something that you know about?  Suppose you want to learn more about Search and Research methods:  Can you find similar or related websites to our trusty SearchResearch1.blogspot.com?  

2. Same question, but about a different website:  Again, one of my favorite sites, www.3blue1brown.com (an excellent science/math/tech site with lots of exquisite videos illustrating complex topics).  

I know you can find these sites, but HOW can you do it?  

BIG HINT:  No matter what Google tells you when you search for similar sites, e.g. [how to find related sites on Google], the related: operator has been deprecated since June, 2023.  It is no more--it has ceased to be. (See the note from Google's SearchLiaison.)  

What would you tell a friend about how to do this kind of search? 

Let us know in the comments.  

Keep searching.