We've just started using our own tumblr at gdauthority.tumblr.com to post some random Green Day stuff.
Unlike our Facebook and Twitter feeds, which post news headlines as soon as we publish them (a good way to let you know when there's news), we'll be using the tumblr a little differently.
Not sure exactly how yet, but we want to share interesting stuff there a couple times a day or so rather than just the latest news.
So if you'd like go check it out and follow us there, feel free to send us a message with your suggestions on how we could use this medium. Thanks!