Flickr App for iPhone, now support ""iPhone 4 HD-video uploads," "multi-tasking," which allow you to upload photos and videos in background. Just tap "Upload" button, do your tasks, and the app bring you back to same place where you left. "Twitter sharing" feature provides the ability to upload photo or video to Flickr and simultaneously post photo's short flic.kr address to Twitter. Just by linking your Flickr and Twitter account.
Also, enhanced "overall user interface, provided option to clear recent searches and full screen browsing experience – once you swipe to next photo, the navigation controls disappear. Just tap photo on a photo detail page in the app,"" revealed Yahoo!.
multi-tasking and Twitter feature demo:
Download: App Store (iTunes link)