WE'RE INDEBTED to TechChrunch for news that the App Store will clock up one billion downloads sometime later today (April 22). The time target appears to be moving a bit, depending on the rates of download, but the best current estimate is that it will happen in the very early hours of the morning Pacific Time. That means it should happen early evening here in Greece. By any standards this is a wonderful success for Apple and just underlines the popularity of the iPhone throughout the world.