Social Media Marketing: Twitter as promotional tool

Twitter becomes more and more a promotional tool rather than a personal communication tool as I predicted some time ago. Twitter is a new (and most probably effective) way of reaching customers with low airline fairs by Jetblue (that as you maybe remember I found to be the most "social" airline) and United Airlines . A quick test confirms that Jetblue is still far ahead of United as to its social presence, with micro-blogging (in fact Twitter) being the reason for this.