Up until recently, I thought the Old World and New World references pertained to geography, Old World wines being those produced in countries that have been producing wine for hundreds of years (i.e., Germany, France, Italy) and New World referring to those countries relatively newly into wine production (US, Australia, South Africa, etc.). But lately I've heard those OW/NW references made to a style of wine -- OW being (maybe) more earthy, musty, etc., and NW being fresher, fruitier, crisper, etc.
Personally, I don't enjoy that "barnyard bouquet", and I've had a couple of people in wine shops tell me that that's an Old World style of wine, and that the only way to avoid it is to know the producer's style in any given region, regardless of geography.
Please help me here -- what is the OW/NW distinction? And, how do I avoid purchasing bottles with that "barnyard bouquet" in any given region?