A more recent post in Flickr in the discussion on how to properly attribute creative commons photos offers the following advice:
First, look in the description of the photo to see if the photographer has mentioned anything there. Then look at the profile page for the photographer and see if anything is mentioned there.
If no mention of attribution, then it seems to be commonly accepted that the attribution would be a link back to the photo page on Flickr with a credit to the person's Flickr name.
And the people at Behold have been working to fix the problem of the changing CC status of some photos. Life is good.
Dianne Goes to the White House!
10 months ago