When you click on the bunnie, it takes you to a page where you enter your email address to register for prizes. When you click there, it takes you to another page with one block to download. There are twelve in all. The thirteenth will be given to everyone who finds at least one by the end of the month. Not every registration will result in a block. You just have to keep looking. Many have had trouble with the site, however, including me when it said I had found all twelve blocks and I had only found eleven. If you come up short, post again, and someone will give you the ones you're missing. Good luck!