Tripadvisor vice-president for mobile partnerships Nathan Clapton told the World Tourism Forum Lucerne (WTFL): "We've been in mobile for four years and there are challenges - not least getting people to use us regularly [by app]." Clapton said: "We recommend to hotels that the mobile web is much more important than developing an app." However, he added: "App users do spend longer with us. We think only a small number of travel apps will be used and we want to be one of them." Get the full story at Travolution