Note host outcue Everybody with an interest in the retail industry has an eye on e-commerce this year, to see what kind of impact the Internet will have on traditional sales. It's not just store owners with a keen eye on e-retailing trends. Increasingly, state officials are asking whether an important source of revenue - the sales tax - will erode over time. As Minnesota Public Radio's Laura McCallum reports, there's no concensus among lawmakers, retailers or industry experts on the issue.