It's the system they use to block stuff, are all sites not frequently used by students blocked? e.g. webcomics, gnu, forums, something which isn't a game but isn't educational? if so then they might be using an inclusion blocker, which means that you can only visit sites on a list determined by your administrator. nothing you can do about that. However if specific things are banned, for example websites which contain the word porn, or game, or gun etc, then this is an exclusion block. This means you can visit any site except those on the college list. If this is the case then you can often get around the block by either setting up a mirror server you can access remotely, although this takes some pretty in depth technical knowhow to get right, or if you know what the web address for the site you want to use is then you can use HTTPS. To do this just go the the web address in question, but instead of "http://www.example.com/lolcats" or whatever, you type in "http
s://www.example.com/lolcats" which produces a secure connection, which although it must be renewed on each new page is mostly secure form interferance by admins or admin programs.
and just as a side note, this should probably be in soap box, not in emotional support
