I love the Creative Commons Search Tool – It’s on my browser tool bar and is my go to choice for image searching. When I’m putting together presentations, I either use my own photographs, so I have the copyright, or images I’ve sourced from here with appropriate CC licences.
I recently put together a presentation to be delivered on Halloween – and these are a couple of my favorite images from that:
ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
Usually I’m collecting images to illustrate a presentation, and even if I share this round afterwards I don’t add a CC licence. Maybe I should be doing this? Or maybe if I’ve used a SA licence for one of the images I’ve included then it’s implied? I’d appreciate any advice on this?