This question is probably aimed at the older crowd. No offense intended, but the "kids" at BB and CC hadn't even *heard* of IM. While shopping for a budget receiver, I noticed the conspicuous absence of the IM distortion rating. One highly rated receiver had a THD of 10% at rated power, but without knowing the IMD, I wouldn't touch it. Have audio engineers found a magic way of eliminating it? For the younger crowd: The "old" school taught me that IMD was important because it's distortion you "feel." Over the course of a feature film, it can cause you to feel fatigued and can literally wear you out. THD, on the other hand, is distortion you hear.