The random link
button was probably removed for censorship
reasons. Junior makes one click trying to find some cool random thing, and *BANG
site, l33t HaCK3RZ
site. There may also be some technical details involved, like the CPU time consumed picking a random site out of an extremely large database.
could also have clicked on Entertainment > Movies > Genres > Adult or thrown the word porn in the search field. The only difference is, those would be intentional, the random button would not.