I cant lie. I love pictures and I got really excited reading about Flickr.
Reading about Flickr all I could think about was the search engine Bing. Every day they have a new picture as a background. When you swipe your mouse around on the picture little boxes of information pops up. I think this would be a great tool to use in a second grade classroom. This would be a great idea for teachers to use to help their students look more into the picture.
I also think Flickr would be a great tool for students to learn in projects they might do throughout the year. Instead of bringing in huge posters with pictures for a project students can compile a group of photos on a single piece of paper and bring it in. Or they can even post it on the classroom blog and present over a projector to share with the rest of the class.