Using the Internet to talk on the phone has really started to take off, the Pew Internet & American Life Project reports. A quarter of US adults Internet users have made phone calls online now (19% of all US adults), up from 8% (and 6%) in 2007. Now, 5% of US Internet users make calls online "on any given day," Pew says, up from 2% in 2007. This was the first year in Pew's ongoing study of Net … [Read more...] about Making calls online is taking off in US: Study