Collagr is another Flickr tool that will create a collage from your Flickr album.
Insert your username onto Collagr's website and you'll instantly get a collage image. The purpose of this image is for you to use the collage as a background, for your desktop or even your MySpace profile. There's no embed code provided, so you'll need to right-click the image and save it to your computer. The collage shows up on a black background and displays your images in the order in which you have them in your album. There are no customization features for this tool. Collagr plans to add more photo-sharing sites for this collage service in the near future.
Need more third-party Flickr fun? Check out Hosted.123Flickr, its sister site 123Flickr and SlideFlickr.
See also: 11 Craziest Ways To Browse Flickr Photos