Not quite. They own quite a bit of space in the building, and only about half a floor is ads, not all of which is DoubleClick. There's lots of other projects go

Not quite. They own quite a bit of space in the building, and only about half a floor is ads, not all of which is DoubleClick. There's lots of other projects going on there as well. (Source: I was an intern there last summer and visit friends there every so often)