I don't think anyone got truly offended, just that they saw an opportunity to do something interesting with Twitter - which is mostly a very mundane activity - and went with it. An opportunity to rally the pitchfork brigade can feel very empowering to people who spend a majority of their time 'socializing' with a facile society such as Twitter provides. If you ask me, the root cause of this cannibalistic mob desire is, fundamentally, dire loneliness.

When can you get 15,000 people to hate something you've decided is worth hating, its quite a buzz.