Don’t use Flickr for commercial purposes. Flickr is for personal use only. If we find you selling products, services, or yourself through your photostream, we will terminate your account. Any other commercial use of Flickr, Flickr technologies (including APIs, FlickrMail, etc), or Flickr accounts must be approved by Flickr. For more information on leveraging Flickr APIs, please see our Services page. If you have other open questions about commercial usage of Flickr, please feel free to contact us.