I did a 10-minute screencast for MWN members on how to activate and use the Jetpack plugin. Jetpack is already enabled on your site. You will need to connect it to a WordPress.com account to make it work, but that is free and takes only a couple of minutes. Jetpack is highly recommended for its numerous features, such as keeping track of site traffic, shrinking images so your page loads faster, and protecting your site from phoney login attempts by hackers.