Sales figures for HD Radio sales are hard to come by and sketchy at best. HD Radio has been around for three years now, and last year there were perhaps a couple of hundred thousand sold. If the rate of sales had accelerated this year we probably would have read about it. However, the HD Alliance has been rather quiet on sales lately. Let’s face it, as new-tech toy sales go, HD Radio sales have been a dud. Radio reaches 93% of Americans every week and is one of the most effective marketing tools available to advertisers, yet we haven’t been able to sell in three years as many HD radios as Apple sold iPhones in a single weekend. That alone should alarm us.