A Hop From the Grape Vine.
Among his points:
What am I saying? Beer is entirely lacking in intra-style consistency. What you expect from a beer style is a much more of a range, maybe even a guideline, than what you'd expect from a wine style. It can be hard to wrap your head around, and while that kind of radical difference is the thing that makes the beer geek in me go all woogy at the knees, I can see how that same inconsistency would drive somebody nuts if they didn't know what they were getting into, most especially if they're coming from a beverage experience based on clear cut expectations and a certain amount of predictability.
Thought the beer aficionados around here might be interested in reading and weighing in.