“…By drawing from the database of a national survey of 910 U.S households, reference [9] analyzed both the rate (the number of hours of computer use in a typical week) and the variety (a checklist of 17 different uses) of the use of computers. In another survey of 101 working adults using mobile internet, reference [10] classifies all on-line tasks performed into three categories including gaming, transactions, and general tasks that do not involve transactions and gaming. In a more recent survey of 276 Wi-Fi users in Hong Kong, reference [11] found that half of the respondents have used mobile internet for more than two years and used it over four hours a day; over one third of them use mobile internet for e-mail checking and information search, and other online activities include gaming (39%), transactions (32%), shopping (30%) and investment (21%).…”