CNBC:

Apple now says that iPhone users have “downloaded over 300 million” applications from the App Store, from games to business programs. Why is that stunning? Consider that on the company’s conference call on October 21, Apple disclosed that the following day, Apple expected users to download their 200 millionth app. Which means, as of today, users have downloaded a staggering 100 million apps in just the past 6 weeks.

“It’s unbelievable,” says Piper Jaffray’s Gene Munster. “It’s a differentiator. We think in ’09, it’s going to be a $1 billion market place and Apple will probably take about 30 percent of that. There’s virtually no operating expense for them. They just approve the apps. It increases our confidence that” Apple can make these numbers.

There’s the genius of the App Store.