Show all of the photos belonging to one user that another user has marked as a favorite. You can use each person's username, email address (used to sign up to Flickr), or user id.
Jigsaw, Hockneyizer, Movie Poster, Motivator, Billboard, Calendar, CD Cover, Pop Art Poster, Pocket Album, Bead Art, Framer, Wallpaper, Color Palette Generator, Photobooth, FX, Lolcat Generator, Map Maker, Cube, Mat, Trading Card, Magazine Cover, Mosaic Maker, Badge Maker,
I know, right? It's a lot to take in. Go slow.