Hors Taxes Duty Free up and running on Twitter

There is an ongoing debate as to whether major Brands should engage more with social networking sites. Duty Free on arrival have embraced this media to build awareness of their new websites, some of which are preparing for the potential introduction of arrivals duty free in Canada. It is noticeable that many major and low-cost airlines have joined the Twitter frenzy, as perhaps they feel the need to be represented there. How many other Brands will join and does this marketing really work for global brands?