Bill Gates, Man United and 20 other sites that ban linking to them
malcolmcoles.com
malcolmcoles.com
People disagreeing with your or shocked by you might not remember (or maybe are too young?) the Internet of the 1990s. Search engines sucked, directories were the thing, and putting your site in a directory or linking to a website was, sociologically + relatively speaking, a pretty big deal.
Back then, there was no expectation that a website was publicly available to everyone, even though it was accessible if you knew the URL. Sort of like today people don't share their home addresses or photos of their living rooms unless there's a good reason to do so.
EDIT: a better example in relation to today might be Tor addresses or dark web URLs.
I wasn't having a homepage back then, but I was interested in having one, so I've read quite a few resources about that way back.
What I can remember, is something like website rings (or something like that) where people joined some group of homepage owners and kept a list of links to each other (and / or a "next" and "previous" link to someone else's homepage).
stuff like /about or /contact -might- not be considered a deep link depending on the opinion of whomever is running the site.
[1] eg https://en.wikipedia.org/wiki/Perfect_10,_Inc._v._Amazon.com....