There are great Web 2.0 resources for the classroom, with new tools appearing all the time and others disappearing. I'd love to hear how folks manage them - how do you assess new tools, organize them, share them with teachers and students at your schools, etc.
A tag is simply a word you can use to describe a bookmark. Unlike folders, you make up tags when you need them and you can use as many as you like. The result is a better way to organize your bookmarks and a great way to discover interesting things on the Web.