Jesus this threads still going!?! All these classifications, they're cooked up by big brands you know. They hammer out terms such as freeride and all mountain to give themselves more markets to build genre specific products. so instead of being content with your 2 bikes, you need 5, because your 140mm dual sus am bike is too aggressive to ride xc but won't handle the massive drops of freeride and so on. Although as each of these riding slyles evolve they are legit, they pretty soon become massive grey areas and people just get back to riding with expression of what they want to do. It's happened in skiing, snowboarding skating, bmx and surfing and probably more. IMO unless you're competing or following a training program, you're freeriding.