Perlmonks.net allows me to read Perlmonks at work. Some fool here at work left the Perlmonks full page chat up overnight, shortly after some other fool was using the LAN to serve Bit Torrent (one word?) files. The administration decided to close up the LAN a bit, and Perlmonks.org is now blocked because it's a "high traffic website".
And while I'm the only one here at work (that I know of) that reads Perlmonks (thus affirming my status as the first fool) I'd never be daft enough to abuse the LAN to serve high traffic files.