Web 2.0 apps in the elementary classroom

When you are first investigating Web 2.0 and all it's amazing applications you may, at first, assume it is a static group of applications and that Web 3.0 will be the next group of new apps. Not so. Web 2.0 is dynamic and constantly changing to meet technology users needs or wants. We as educators must get out of our comfort zone and occasionally try a new app. to see if we can use it in a MEANINGFUL way. We've been playing around with Wordle, animoto, edmodo, googlesites, blogs and twitter. Where do these apps. make sense in our classes?