Apple's cellphone line is now competing with digital SLRs for the most popular cameras used on Flickr, according to the photo site's Camera Finder. The site shows the iPhone's two-megapixel unit as responsible for roughly as many photos as Canon's EOS-40D and is near other considerably more expensive cameras in the ranks, such as Nikon's D80 and Canon's Digital Rebel XT. The iPhone is also unamb
