*Yawn*
Gosh, it's late so I'll make this post a short one. If you're looking for a
good source of images for your slideshows (one of the things
I just finished ranting about over at SEGATech), check out Tiltomo. It's a visual search resource (a
little different from Google Images)
that plumbs the depths of Flickr to find
the pictures that you need. Would I turn students lose with this resource?
Probably not (although they're most likely using it now anyway). Instead, I
suggest that teachers use this tool to help them locate the images they need.