In June Google will make a key change to the way advertisers can target specific devices through Adwords campaigns by allowing them to operate just one campaign. There will be one homogenised bid for tablet and desktop, giving advertisers the possibility to exclude mobile. However, Google argues very strongly that irrespective of what your business model is or product you are selling there are consumers who are doing to vast majority of their interactions with your business on mobile phones. On mobile the length of query is much shorter on mobile phone because of the difficulty you have in typing on a phone and there is more geo-specific activity around mapping and timetabling because people are on the move. They are not particularly commercial travel queries. Get the full story at Travolution