Firefox web browser extension FlickrFox lets you browse photos in the sidebar from photo-sharing service Flickr.
Keep up-to-date with Flickr photo streams without having to go to Flickr yourself. View friends' recent photos, a group photo pool or your Flickr favorites while you go about your browsing business - the photo streams automatically update for you. FlickrFox might take up too much real estate to keep the sidebar open all day long, but it's easily toggled on and off.
FlickrFox [Phil McCluskey]
Related:
Tips for Flickr beginners
Firefox