On 22/06/2014 17:10, Itzik Edri wrote:
Many people are already using the photos on websites, Flickrs accounts and others photos services
They had better not be using them on flickr accounts as flickr may delete the entire account, for infringing the flickr and Y! T&C. The issue being that flickr accounts should only contain material that the photographer has taken themselves, there is some leeway for old family photographs. Accounts that contain material that has been hoover up from around the web tend to get deleted.
https://www.flickr.com/help/guidelines/
That includes material that is CC'd and also material where the photog has given explicit permission. The issue is that on flickr there are many places where a copyright notice is added that references the account. So if Fred Bloggs uploads John Doe's photograph, it will falsely be attributed as "Copyright Fred Bloggs" this attribution violates all CC licenses.