This is what happens when the blogging platform of the moment goes down for more than half a day. I have to admit I was a little vexed to see Tumblr down this morning, since it's a great home for both pop-culture blogging (the GQ Tumblr site is fun, although it's not like you can see for yourself right now) and cat photos copied from the Internet without permission, but I have managed to stay on the right side of having a will to live.
Best of luck with your server issues, Tumblr. We're all hoping for the best. Turn our :( into :)