Flickr recently changed the permanent URL's of their images.
The previous Flickr photo URLs were like photos21.flickr.com/338.. but the new URLs are of the form static.flickr.com/21/338..
The image names continue to remain the same but the subdomains photonn.flickr.com have been replaced by static.flickr.com/nn - the subdomain server identifier is now a directory on static.flickr.com website.
The old Flickr image URLs continue to work as Flickr automatically redirects them to the new version of the URL.
If you still don't see your Flickr photos on your websites, try clearing your browser cache and reloading the page. It will work.
I would still recomment that Flickr users grab the new URLs and update their blogs to prevent the extra burden of redirection.
The previous Flickr photo URLs were like photos21.flickr.com/338.. but the new URLs are of the form static.flickr.com/21/338..
The image names continue to remain the same but the subdomains photonn.flickr.com have been replaced by static.flickr.com/nn - the subdomain server identifier is now a directory on static.flickr.com website.
The old Flickr image URLs continue to work as Flickr automatically redirects them to the new version of the URL.
If you still don't see your Flickr photos on your websites, try clearing your browser cache and reloading the page. It will work.
I would still recomment that Flickr users grab the new URLs and update their blogs to prevent the extra burden of redirection.