By July, the iPhone 4 will be the most popular camera to post pictures with on Flickr, above Nikon D90 and other serious cameras. Well, at least it couldn't happen to a better phone camera, there's nothing "dilettante" about that camera, it's better quality than most compact digicams I have had.
By the way, new on that: with iOS 5, you can shoot with the camera without using time on unlocking your phone. And you can shoot with the Volume-up button. Very handy.
(Amusingly, earlier Apple banned an app from the App Store because it did this, with the volume-up button. Hah.)