I created a Flickr group that is collecting light painting photographs and we want to create a book to raise money for a cancer charity. I see on Blurb you can upload your photos through your own Flickr stream but can you upload photos from a Flickr group? Do you have any suggestions as to how we can print this book? The only thing I can think of is to ask everyone to email a high resolution file of their photos, which would be a long process. There's over 500 people in the group. Thanks for any advice.