[nethergoat]

Note that it's not 1000 servers every week, it's up to 1000 servers in a given week. This was likely done to support the launch of a new game, and may factor in server turnover (they're on EC2).

That being said, launching 1000 nodes for non-batch jobs is still pretty remarkable.

[bd]

Zynga can have absolutely crazy growth on launch. FarmVille was growing few million users a week.

Also keep in mind interactive multiplayer games with persistent state are different beasts compared to usual web applications. Games are very write heavy and do not cache well.