Searching for permissible photos is very cumbersome. It takes quite a while to search each option. But without searching that way, I couldn't tell what permissions were available. I think this would take a lot of time in class.
Of course, I couldn't decide what I pictures I wanted or even what key words to start searching. I also played with uploading my little one's pictures. They're too big, though, so I need to use software at home to make them smaller files. At least, I think that's the problem. I really like that you can share photos and determine your own level of security for them. Also, others can download them for free. I need to move all the baby pics here and get the family to join the group.
Regarding education, I can see giving a photo assignment and having kids comment on them within a group. It would also be neat to take photos of products and post them here for parents.
I couldn't figure out how to get a text box beside the photo to give credit. I decided to hotlink the photo to the Flickr site when I couldn't figure out another solution.