I have it, but it doesn't do anything that you can't do by emailing a photo to your account (there's inx on the flickr site for how to add a description, tags, etc.), so I don't know if I'll keep it...
I have the program, and I love it. I have a private group on the Flickr website called "Crackberry Pics." Join it if you like and post your favorite pics taken with your Crackberry.