The most popular camera on Flickr is the iPhone 5. The second most popular camera is the iPhone 4. (http://www.flickr.com/cameras) The new Flickr iPhone app is pretty cool. Bottom line, Flickr is about taking pictures and sharing them. I know Flickr has been languishing of late but I think things are heating up over there. I think it could regain it's status as the dominant photo sharing site it was a few short years ago.