A story reporting Pew research on perceptions on the Internet has this little nugget showing how different developed markets are from ours. For all the talk of our culture moving to mobile phones, more than one-third of the respondents said a landline phone was vital to their jobs, compared with the one-quarter that said a cellphone was very important. Pew surveyed 535 American adults employed full-time or part-time in September using a nationally representative online research panel. The margin of error for the survey, which was conducted in English, was plus or minus 5 percentage points. Respondents said the Internet had made them more productive and given them more flexibility in their jobs, but about 35 percent said they were also working longer hours because of it.