Update 9/28/2009 Please see this post on the correct way to attribute photos, it includes example of an perfect attribution.
I get most of the great photos I use in my blog posts from the Creative Commons licensed pictures on Flickr. Most of these request attribution and I’ve seen it done many different way. Some people just make the photo link back to the original on Flickr (my old method). Some give credit and/or a link below the photo, some give credit at the end of the blog post. There doesn’t seem to be a hard fast rule on the correct way to do it.
Recently I started thinking I should also live a comment on the photo thanking them, telling them I used it and linking to the post so they have a record of where. Mostly because if someone were using my photos I would appreciate knowing they used it and where. But then I got worried it might look as if I were promoting my blog, so I asked on Twitter
when you use a CC flickr picture in a blog post do you leave a comment on that photo letting the person know?
The response I got varied from Flickr should enable trackbacks (great idea) to never thought of it to I send the person a private message.
So how do you handle crediting the Creative Commons photos you use?
If you want to read up on Flickr & CC: