You might not have thought about using keyboard shortcuts with Flickr, but I can tell you, they are fun and efficient. My favorite is the "l" shortcut to switch to Lightbox mode when viewing individual pictures.
To see how this works, plus more tips, take a look at this movie from my Flickr Essential Training title, and see what you think.
More Training Available
We have many more informative movies available in the lynda.com title, Flickr Essential Training. Stop by and learn how to get the most from your favorite photo sharing application.