At first glance, Twitter's international policy on censorship seems reasonable. If the laws of a particular country require content to be locally blocked, then Twitter will adhere to that, deeming it to be a lesser evil than having the social network blocked in its entirety. This is what's just happened in Pakistan, where five requests from a government office have, for the first time, resulted in "blasphemous" and "unethical" tweets being blocked to Pakistani users -- including crude drawings of the Prophet Muhammad. This successfully avoided a repetition of what happened two years ago, when similar content temporarily led Pakistan to deploy a site-wan ban against twitter.com. However, critics say that, in practice, Twitter's policy isn't working fairly, because it's giving too much power to would-be censors who, even within their own countries, don't actually have any authority to block or delete content.