Just had a quick look at the Squidoo ‘lenses’ to see what was emerging out there, in terms of learning sites. There are some there, such as this one on educating the new generation, but I have my doubts about the one long page metaphor of Squidoo. Perhaps a better use of this, in schools, might be to get students to creat their own ‘lens’ on a certain topic. A lens seems to be a page of information, images, links, Amazon resources etc. on a specific topic.
Students might create a lens on a fairly specific topic, and these could be shared. You could get students to create a ‘lens’ on something like a character in a novel, a Science topic like a chemical element, a historical battle or significant event, a local geographical river, stream or erosion site etc. I haven’t played with this tool at all yet, so I’m unsure how collaborative it can be, it seems a single user tool to me.