I played vanilla WoW some years ago. I have lost my account and my cd-key, so would have to "start from scratch" if I decide to pick it up again. I've been reading some about the new Cataclysm extensionexpansions and is kind of curious and thinking about trying it out.
There are several extensionsexpansions now, and my question is: How are they all related? Would I have to get all of them to try out Cataclysm? If not, if I skipped out on them, what would I be missing? Can I just get a free 10-day pass to try out Cataclysm, or do the 10-day passes limit me to vanilla unless I own other extensionsexpansions first? If I have only certain extensionsexpansions will I still run into people who have other extensionsexpansions, or would my number of extensionsexpansions decide what realms I would be able to play on?