Does Flickr Promote the creative commons?

I know creative commons options are offered as an option when you upload pictures. I think flickr does a great job of encouraging the use of creative commons licensing. I think the explanation was clear and the options were surprisingly easy to use. It can only help flickr to have more pictures available for use. I like to share my pictures. It makes me feel like I am doing the right thing. Sharing my work with other people makes me feel good.