For anyone who's read this blog, one of my hobby-horses about residential VOIP is the need for it to become more user-friendly. Right now, it's mostly the domain of tech-savvy pioneers who live in single-phone households. That said, it always find it interesting to stumble across companies with technology to make VOIP easier to use. One of them is I2 Telecom, which has started to offer a VOIP service in the U.S. that lets its customers make calls by plugging into a high-speed DSL or cable modem, or a conventional circuit-switch line. I don't know enough about the technology tell you about the quality of calls made over the POTS but it is a neat trick if I2 can pull it off successfully.