Nincompoop
I'm a bit up in the air about the logistics of this IM being blocked mandate. It appears, thus far, that it's still working, at least Yahoo still works. I'm wondering if this is the same blocking that occured with peer-to-peer programs (Bearshare, etc) awhile back. Our corpulent commander of the network did block access to their websites, but as I found out, you can go to download.com, get your favorite peer-to-peer file swapper and then merrily go about your thieving.
What the tubby tyrant has done successfully is block access to what the web filtering software refers to as "Message Boards and Clubs", whatever the fuck that means. It evidently means I can go out and look at scat or bestiality porn, but I can't go to Fluffy Happy Bunnies or Stupid Evil Bastard. Nice. While I'm sure there is some vulnerability somewhere in the vast, broad definition that the software has given "Message Boards and Clubs", I can't begin to fathom what that might be. So I'm just going to bitch about it.