Back when I didn't have the net connection at home, I used to browse for porn at the university computer room. A perk of being a nerd student in a non-nerd faculty is that the admins/tech don't expect you to know your way around computers and so only use minimal security.
The new WinXP network was filtered against porn, torrenting and whatnot, but the old server from when the computers were still running win98SE had somehow been left running, and access to everything was open. Now, WinXP was set to load settings from network, so you couldn't change network settings, and you weren't supposed to run live-CD operating systems - they'd removed the ability to boot from CD to prevent people from doing that. However, they mistakenly left one computer of them all set to boot from floppy first, so I ran a floppy-loading BIOS password cracker, found the BIOS password (same for all computers in the room), and I restored proper boot order on all machines. I would then run Knoppix, connect it to the old server, and surf to my heart's content - porn included, which I'd copy on an external drive and then, um, peruse back home. I could also print for free on the networked printer when everyone else had to pay.
I dunno how long I would have been able to keep doing that had I not gotten net access at home - once or twice I had to kick the reset button in a hurry as the tech came into the room, ostensibly to reload paper in the printer but I suspect he really wanted to check why one of the connections wasn't going where it was supposed to. He probably suspected me, but he must have known he could prove nothing...
I got the net at home right when I was gearing up to install Linux partitions and hidden bootloaders all over the place, turning the whole faculty in a little home away from home...