Wendy Moe (2003) argues that in the offline environment, consumers who are shopping in stores can be easily classified by experienced sales employees only by watching their shopping behaviours. These sales will approach them initiatively because they knew they look like the kind of consumers who are really seeking something to purchase, while other "hanging around" shoppers will generally be ignored by the experienced sales. Such classification may not appear online, but Moe and Fader argued that by it is feasible to predict practical buying, surfing and searching action online by investigating click patterns and repetition of visit within online behaviour. In addition, a report of E-consultancy about "benchmarking of user experience" outlined three kinds of online consuming behaviour as a valuable classification for the research of design of web pages to better serve different kinds of consuming behaviour. The three categories are: "trackers","hunters" and "explorers".