It was late last year that Flickr for iOS underwent a major makeover as part of Marissa Mayer's vision to revitalize Yahoo products, and today the app's on the receiving end of what's perhaps its most notable update since. The refreshed application will now let iDevice owners easily mention Flickr friends by way of -- you guessed it -- that ubiquitous "@," while the new version also brings speedier photo uploads, an option to save shots from your own Photostream to the iOS camera roll and the ability to quick
