Twitter

I'm pretty sure it used to be (only a couple of days ago) that when I clicked on a link, it would only let me scroll so far on the page before nagging me that I had to sign in.

if you replace twitter.com for nitter.net then you see exactly the same content (although it looks like a 90's website) but no adverts and no annoying JS shite that throws up random login boxes.

(There is a cap on usage so it may not work late in the day, whenever the "day" begins for them.)