Kids with Cell Phones, How Young is Too Young?

An anonymous reader writes "CNet is reporting that the average age of a child receiving their first cell phone is continuing to drop. A report carried out last year showed that the average age of a child's first cell phone was just eight years old and is expected to drop closer to 5 years of age this year. The author raises the obligatory medical questions that have been argued about in adults for years. Just how young is too young for a cell phone?