Forgive me for a minute, I'm going to be a nerd. The Smithsonian museums, while all connected at the root, are each very separate entities. Well, now you can search the collections of all of them, all at once. The magnitude of that is frankly staggering. The search center currently contains 2.3 million records, and has got a lot more growing to do, yet. Way to go, Smithsonian! I am proud of you.