It appears that Blizzard has beefed up their World of Warcraft recruit-a-friend program
rather substantially. There have been rumors that this was coming for a while now, but the details are still a little surprising. Benefits include triple experience, being able to summon your friend from anywhere in the world, free levels, free gametime, and even a free mount if your friend signs up for a two-month subscription. All of these are subject to several quid pro quos, but it looks like Blizzard is really trying to ramp up their player base for the expansion.