When I was an Undergrad at UCSD there was an ongoing tradition of writing anonymously on walls in various halls on campus. A sort of informal analogue blogging that was going on as people wrote about their life, invited comments and whatnot.

One of the former writers has detailed the history of it here:
http://planetmind.net/peeps/towers.txt

I spent many an hour reading and following discussions up the 7 floor spiral staircase in HSS.