"Can I live in Europe and legally have a US account and play on a US server?"
As far as I know, that's perfectly fine. I don't believe there are any regional restrictions like that. We have a few people on our staff that do it already, and I'm in the US and considering an EU account. There's nothing stopping you from doing it.
"Who is Dan Jolley? Apparently he has a lot of galleries at WoW.com."
Our galleries are haunted. Once upon a time we accidentally created two Dan Jolley galleries rather than just the one we needed for an article. We decided to delete one of them, but that apparently caused the slighted gallery up for deletion to become enraged. As we murdered it in cold blood, it swore vengeance against our cruel, unfeeling hands and cursed us to a thousand years of pain and horror. Ever since then, the ghost of Dan Jolley's gallery has haunted all of our other galleries, and we can't get the name off of the title bar. We've tried and tried, but it has infected them all. I'm not sure how much it has actually been looked into, but even our site's developers look at it and go, "What the hell?"
Overall its pretty harmless since it's only on the low-res versions of the pictures, not the hi-res versions or the galleries themselves, so we're not dying to get it fixed. It's annoying, but it's also funny. Maybe it'll go away eventually, or we'll be in a wonderful situation where something like that is all we have to worry about. Then we'll get it fixed.
Update: Never mind. I fixed it. Because I rule.
"Can I get the new chest with XP heirloom without doing epic dungeons?"
Yep! Once you've reached the Crusader rank at the Argent Tournament, you can use the Champion's Seals you've been getting to buy heirlooms. The new chest pieces will cost you 60 Champion's Seals. You don't need to run a single dungeon to get those, just do a lot of daily quests.
"Any ideas on what's going to happen to Outland and Northrend in the expansion? Will they just become ghost towns?"
The awesome "For the Horde!" kid at BlizzCon asked something like this. Essentially, will the Cataclysm have any impact on these areas. The answer was that Northrend will be impacted a little, but not quite as much as the rest of the world. The Cataclsym won't bother Outland since it's a uniquely Azerothian event, though they will comb over the Outland quests to make the leveling experience better.
I don't think Outland will be any more of a ghost town than it already is. Do people still hang out there? Once you've leveled through it, you bail for Northrend. That won't change.
"Do we have to get The Explorer title now, while the world's still whole? Or will it be altered for all the new terrain or lack thereof?"
It was very briefly mentioned at BlizzCon that many of the "old world" achievements will be updated to reflect the events of Cataclysm. I would guess that this is one of those achievements. I can't promise that, however. They might decide to make this one of the achievements that becomes a Feat of Strength or something like that. Keep this question in mind, and ask us again once Cataclysm hits beta. We won't know for sure until then.
A lot of people asked...
"What did you like best out of BlizzCon this year?"
This will sound incredibly corny, but the WoW.com meetup was my favorite part. It exceeded all of our expectations, almost to the point of absurdity. Last year we had somewhere between 150 and 300 attendees at our meetup. Our site has grown since last year, so we were expecting between 300 and 500 attendees. In reality, the number was between 1,250 and 1,500 with the cast of The Guild among them. We definitely did not plan for something like that, but we'll be sure to do so next year. On top of that, we had, at its peak, 2,000 people watching live from our little thrown-together laptop camera stream from their own homes and probably around 6,000 people checked it out throughout the night. For awhile there, we were in a state of utter disbelief. We were totally blown away.
It meant a lot to all of us that so many people would come out in person just to hang out with the WoW.com crew. Having so many people there made it really hard to meet everyone that wanted to talk to us (and very hard to do some of the other things we had planned), but the whole thing still made us very happy and very proud.
If using that as my answer is cheating, then my favorite part of BlizzCon was hearing Chris Metzen do some of his StarCraft/Warcraft voices. My little fanboy heart was all aflutter.
Have questions about the World of Warcraft? The WoW.com crew is here with The Queue, our daily Q&A column! Leave your questions in the comments and we'll do our best to answer 'em!