This is being investigated currently and we hope to have this resolved as soon as possible.
We'll share updates here as they are available - and as long as I'm awake
Meanwhile, The Hub is up and working - feel free to share your questions here!
Edit - 10:12PM EST: The site seems to be working again now. If you have trouble, please let us know here.
Edit - 4:50PM EST 3/1/16: A new problem has appeared... we're working on it.
Edit - 5:01PM EST 3/1/16: Resolved.