As I said in the post, why must Valve do this? Alienate a decent bulk of their customers? I still have yet to play L4D, and after the L4D2 fiasco, I'm getting even more angry. Where else to go to get my online gaming fix? Battlefield [1942|2|2142]? Too buggy, and just not the type of game I can call my "default". Enemy Territory: Quake Wars? It's decent, but it's getting stale.
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I'm the exception, not the rule. Remember that, and you'll be all right.