Get TweetMWC for instant news at the Barcelona Mobile World Congress. TweetMWC is the easiest way to use Twitter for following what is happening at Barcelona Mobile World Congress 2010 in no click. - Just install the free app on your phone to get edited newsflashes throughout the show. - No registration needed. Simply install TweetMWC and you're ready-to-go. - But if you're already a twitterer ... you'll be able to send tweets as well.