A friend on Facebook responded to my request for help in spending my tax refund by saying I should buy an HD radio receiver. I had no idea what he was talking about, but I thought, "Is it some sort of superpowered radio wave that will finally let me listen to something besides "Classic Rock KQRS" over the airwaves? According to these articles, no and not really--the signal's actually weaker. Also, the list of stations available* in my area is not blowing my mind. Right now I have an an all-stoner rock station, all Goa Trance, all Jpop on my computer and AppleTV, but with HD Radio I could have--KQRS Deep Cuts! Woo, all the Lynyrd Skynyrd songs that aren't "Free Bird"!
So, in conclusion, this technology bears keeping an eye out, as it could be good in theory, but it's not for me at this time.
*And that is a horrible, horrible web site. Apparently, hd radio is for smug jerks with boats who love to hear annoying one-celled organisms sing. Way to sell a new technology, dudes!