I have yet to come across a Web 2.0 application that has to do with environmental awareness like BeGreenNow.com does. This unique online application lets you calculate your current carbon footprint and teaches you how to offset it to help make the world a little greener. BeGreenNow is also a portal that educates and inspires people to influence and help out when it comes to the global climate issues surrounding our world.

To get started, sign up and enter your carbon calculator columns for your emissions in Electricity, Vehicles, Air Travel, and Natural Gas. As you change your routines to help the environment out, you can keep logging back in and updating records to see if your CO2 emissions have improved. A simple graph makes it easier to see what areas you could improve at. In all, it's a nice Green Web 2.0 app.