Well, in my case I have Twitter (and Facebook) banned at work. Fortunately I'm the only one wasting my time on Hacker News, otherwise it'd be blocked as well.

Well, in my case I have Twitter (and Facebook) banned at work. Fortunately I'm the only one wasting my time on Hacker News, otherwise it'd be blocked as well. Edit: the recommendation "flee any company that filters your Internet" also applies to my case.