The aristocracys were already interwed before the conquest. I mean williams wife was related by marriage to haralds wife, and this cementing of families continued. One impact you see is the saxon families ended up kore interwed to the scottish nobility, st margaret being an example

And yet your not allowed to discuss the implications of marriage between cousins in case people become upset

It moved to indiehackers - mind you indiehackers is mostly marketers now

I want a spam filter extension for browser that work with social media and remove the bots, and tune what the algorithm is trying to send me

So if you are on reddit - the extension would remove accounts that are likely bots based on age of the account, and other criteria. Same for other social media

Ive had a look and there doesnt seem much in this area