Related to this topic (but possibly offtopic):

I have recently discovered the value in blocking the "related content" lists a lot of websites put on the side of their pages.

Think of the "more from Viral" list on the right side of the imgur page, the viral articles on the right of the news article you're currently reading, and even the "hot network questions" on stack overflow.

I've found myself visiting a website with the desire to consume a specific piece of content and get sidetracked by those lists. That's the reason those side lists are there and of course there are metrics tracking their efficiency.

I've noticed a jump in browsing QoL once I started blocking those lists.