I am back from Dubai. I visited Dubai Internet City again (it was being built the last time I was there) and it seemed to have a high occupancy rate, with all the majors present, and plenty of minors too. Remarkable. Dubai is building offices, homes, malls, and hotels at a rate that defies belief. They are planning to make the world's tallest building (the actual target height is a secret) which leads me to beleive that much of this investment is speculative waste. The rational brain does not pick "tallest" as the guiding principle for a building.