You can pre-order Harry Potter and the Deathly Hallows either from Amazon.com, Barnes & Noble or from Borders. If you get it from Borders, you can also choose a free bumper sticker of your choice--one says "Trust Snape" and the other "Snape Is A Very Bad Man".

I'm ordering from Amazon.com so that the book is shipped directly to my home. But if I were to choose a sticker, I'd go with "Trust Snape" myself. Just a hunch.