This is a great accomplishment for Android. The market is growing faster than most of us anticipated. This was revealed during this afternoon's Q1 earnings press conference, Jeff Huber who is Google's senior VP of engineering. Also, Google views the Nexus One as a “profitable business” even though most analyst feel it didn’t sell enough units overall.
Android use is up 70 percent from last quarter, and there are reportedly 60,000 Android phones sold every day in the world. The popularity of Android coupled with the ease of app development is attracting more and more developers to the platform. Developers have more freedom over Android than they do over other platforms(iPhone’s in particular). These number will continue to grow at a fast pace so expect more great apps soon.