NB: This is a guest article by Jamie Riddell, creator of social media insight company Birdsong.
Twitter is now a key channel for airlines to communicate with their customers.
As a business metric, the number of Twitter followers still matters as it is a base from which to build engagement, promotions and all the key elements that add value to the airline and the followers.
Read full story at: http://www.tnooz.com/2012/07/13/news/airlines-with-the-most-followers-on-twitter-and-why-it-matters/