I can access INGO from work (while many other benign sites are blocked) which is totally awesome!
I don't know how the admins set up the site, but it's great.
Yeah, that's the sort of bypass mechanism that I don't recommend. If your boss went to the trouble and expense of blocking websites, he's probably not going to be happy about you going ahead and browsing them anyway.
I love being the network admin... I can go where ever I want.