Most of those who wanted to buy a BlizzCon ticket have just been through two horribly rocky days marked by constant refreshing, stylesheet errors, and the dreaded Fail Murloc. For better or worse, it looks like that wait is at an end, as the multiple sources are reporting that BlizzCon Tickets are sold out.
This is probably something Blizzard's going to see some backlash on one way or another. Whether it was poor planning, poor servers, an expected deluge of customers, or a combination of all 3 and more, the experience of trying to buy a BlizzCon ticket for most has been anywhere from 12-36 hours of pure agony marked by small 5-20 minutes windows where handfuls of lucky customers made off with the precious tickets.
Of course, all hope may not be lost for those who failed to capture a ticket, as this may simply be yet another CSS error.
In addition, Blizzard did sell the Worldwide Invitational tickets in waves as well. They may need to do the same for Blizzcon here, if only to give a fair shake to everyone who could never get past the CSS errors and the cold unforgiving face of the Murloc.
EDIT: A commenter on the official BlizzCon forums says that a Blizzard phone rep told him they are not sold out.
EDIT 2: The ticket page appears to be working again and not showing the tickets as Sold Out. The Fail Murlocs and XML errors continue apace, however.
Edit 3: The saga continues. as of 4:40
PST EDT, some sources are reporting the dreaded sold out notice again -- or are having the ticket mysteriously disappear from their cart once they make it to checkout.
Edit 4: Nethaera has just posted to say that most BlizzCon tickets are now sold out. However, they will be selling a small reserve starting tonight at 8 PM PDT.