I've just added some JavaScript to the map so a History is built of what you've looked at. No-one else has access to this information because it's kept in a cookie on your machine. To try it out just select some data to be loaded onto the map. Then select another Item and load it on the map. You'll see your list building up in the History link. It stores the latest 10 bits of data you loaded onto the map. This is designed to help people temporarily store what they've viewed. The data will always be there as long as you have a valid cookie. Ideas and suggestions welcomed