Alittle while ago we introduced you to the phenomenon of the Flash Mob. In case you have forgotten, a Flash Mob is a group of at least ten people who assemble suddenly in a public place, perform an unusual and seemingly pointless act – dance or sing a song – for a brief time, then quickly disperse. It is usually performed for the purposes of entertainment and are organised via social media. The term was coined to reference the way the mobs assemble. As always happens, big business has jumped on the back of this spectacle and many Flash Mobs have been organised to promote a company or product. Air Lingus organised one at Dublin airport which was particularly good.