The Second Life user-concurrency and user-to-user transaction figures took a bit of an unexpected jump this week, rising sharply after a year of relatively little motion. Through 2009, user-concurrency has been on a slight, though not terribly significant decline, while user-to-user transactions remained flat and rather unexciting.

The sudden rise coincided with an advertising campaign by Linden Lab, where James Cameron's Avatar and Second Life were rather strongly linked in a series of banner advertisements run on YouTube and as a part of Linden Lab's affiliate program.