1. History of the collision a passenger plane with a bunch of birds in January of 2009, followed by landing into the waters of Hudson has not done without Twiter. Janis Krums , located in one of the ferries, photographed fallen plane
and «tweeted» image before the media arrived to the scene.

2. During the terrorist attack in Mumbai (India) eyewitnesses sent approximately 80 messages every 5 seconds in Twitter. 'Twittering' helped compile the list of dead and wounded. They also distributed emergency telephone and addresses of hospitals in need of blood donations .

3. Investigation of New Scientist technology compared Web 2.0 service with usual world media, in result was found that microblogging service is better  for planning efforts in the rescue operations. For example, the Red Cross in America is already using Twitter for sharing information about local events related to the activities.

4. All entries in Twitter.com are indexed by search engines.

5. Owners of BlackBerry phones are most addicted Twitter users in the world.

6. In October 2008, the U.S. special services had come to see Twitter as a possible communication service for the terrorists.

7. In February 2009, the press Secretary of the Ukrainian president informed about opening of the official Internet profile Of President of Ukraine - Viktor Yushchenko in the social network Twitter.