Twitter has played an instrumental role in keeping the world abreast of the latest developments in Egypt, where demonstrations against the 30-year rule of president Hosni Mubarak have entered their fourth day. The following widget shows Twitter content mentioning the hashtag #jan25 over the last three days, and are all related to terms mentioned in people's Twitter messages: One of the most commonly shared terms ‘Tear Gas’ spiked earlier today when the armed forces utilized tear gas bombs, along with rubber bullets, against the crowds in the streets: Al Jazeera has been playing a key role in covering the events as they unfolded, broadcasting live from Cairo: The United Arab Emirate's @sultanalqassemi is one of the key Twitter users spreading realtime updates from across Egypt: As the effects of the demonstrations spread across the region, we see a huge spike in Twitter data because of an unconfirmed claim that Internet has been blocked in Syria: Stay tuned for more stories, reactions and analysis from Egypt. This post is part of our special coverage of Egypt Protests 2011.