There have been signs that Americans are leaning more and more on the smartphone as a primary internet device, and nowhere is that clearer than the latest edition of Pew's Cell Internet Use survey. The research group found that 21 percent of American cellphone owners now get online chiefly through their handset, up from 17 percent last year. Offline users, meanwhile, have been reduced to a minority -- 63 percent of US cell owners have hopped on the internet from their phones at some point. The PC isn't going away anytime soon, but it's clear that the traditional computer is just one internet client among many.