
Blizzard Entertainment knows they have something with Burning Crusades and is reminding people that no longer are paying the monthly subscription that it's time to pay up. Here is the e-mail message that they're issuing to old players:
"While you've been away, something monumental has been happening in the World of Warcraft®. Beyond the Dark Portal, the sinister agents of the Burning Legion have been waging their demonic crusade to consume the magic of the universe and lay waste to all in their path. On January 16th, their Burning Crusade will come to Azeroth.
Blizzard Entertainment proudly invites you to return to the World of Warcraft on January 16th and journey beyond the Dark Portal, where an infinity of new experiences await you. Given the high volume of returning subscribers we expect when The Burning Crusade™ expansion goes live, if you are planning a return to Azeroth, we recommend reactivating your account as soon as possible in order to avoid the expected rush of launch-day activations.
Ready yourself to meet the onslaught of the Burning Crusade. Are you prepared?"

They then break down the benefits of joining the Burning Crusade, containing the new content and send you links to all the patches that have been applied "since you left."
Blizzard seems to be hoping their new content will bring back a large quantity of their lost subscriptions. To be honest, most people know, once you're off WoW you stay off WoW or suffer the loss of hundreds of hours "wasted" in front of a glowing monitor in the basement of your parents house with a bunch of cheese curls. It's like a cigarette addiction but a bit cheaper.
Are you prepared?