Twitter announced…that it would begin restricting Tweets in specific countries, renewing questions about how…[it] will handle issues of free speech…Until now, Twitter had to remove a Tweet from its global network if it received a takedown request from a government. But the company said…that it now has the ability to selectively block a Tweet from appearing to users in one country…In the interest of transparency, Twitter said, it has built a mechanism to inform users in the event that a Tweet is being blocked…[This move]…represents a significant departure from its tone just one year ago, when anti-government protesters in Tunisia, Egypt and other Arab countries coordinated mass demonstrations on the social network…[also refers to Google]