A few months back, the iPhone overtook the 5 megapixel Nokia N95 as the most popular cameraphone on Flickr. Even though it looks like there was a slight hiccup since then, *gasp*, the iPhone appears to be widening the lead. As Flickr (Yahoo!) is a fairly international company with an international userbase and iPhone's global distribution is just starting to approach that of the Nokia N95, we expect that margin to widen, even with the iPhone's relatively paltry 2 megapixel, flashless camera. Also 3G helps with the uploading, right?
Where are the App Store Flickr apps? A quick search nets nothing significant? Come on, that GPS camera tagging feature is just sitting there waiting for you!