We live in a period of rapid change, in which many new technologies appear and are diffused through medical meetings, the Internet, specialized journals, the lay press, and media. While these innovations may bring a substantial improvement to the quality of care, sometimes, due to commercial pressures, technology can enter the market without adequate evidence of true benefit and without an analysis of the cost/benefit ratio. The converse is also true. Other potentially useful technologies can be underestimated due to insufficient commercial interest preventing further investment and development.