The following error pops up when I try to access some websites on my college computers.I can understand blocking certain torrent-related and *other* sites, but some like the following are blocked. I just wanted to know how do they block/filter certain websites as they cannot sit and add every website to the block list. eg- If I type "torrent", "thepiratebay", etc. the same error pops up with the typed url. The following is a different example... the site fifa.com opened but when I clicked on the photo link, the message appeared. BTW, the images are allowed and displayed.