Summary Box: Facebook data center comes to Sweden

NEW DATA CENTER: Facebook will build a new server farm on the edge of the Arctic Circle ? its first outside the U.S. It will be in the northern Swedish city of Lulea.

THE APPEAL: Facebook says it picked that location partly because of the cold climate ? crucial for keeping the servers cool ? and access to renewable energy from nearby hydropower facilities.

WHAT THIS MEANS: Having a presence in Europe should help improve performance for European users of the social networking site. The move reflects the growing international presence of the California-based site, which counts 800 million users worldwide.