Bundlenut; my go-to site, Free Technology for Teachers by Richard Byrne. In a nutshell this service allows the user to collect website URLs and then share them. Whether the links seek to explore, collect, guide, convince, teach or help Bundlenut is the means to do so.
To change the information in any of the three boxes within the link line, click on it to reopen the text box.
Please note that links to YouTube videos will not display.
The implications for using this in an educational setting are huge; the no registration requirement being a major plus. Groups of students could create online investigations for others. Bundles could be designed to teach research methods.
I'm feeling a little "squirrely" at the ease of use and the great results. Bundlenut has a new fan. Check out the beginnings of my Bundle titled Mock Caldecott 2013.