Got it as well and I don't even have status!
Unlike last time, it seems each user has a specific Hilton Honors Account number and PIN they enter on the above site with my personal information pre-filled. Unlike the previous campaigns for instant Gold, Hilton obviously learned their lesson not too give out a blanket code for anyone to use.
I have no idea why I was targeted, my Hilton stays are usually via Priceline and my AP miles have dwindled considerably as I've diversified to other programs while AP slowly makes their program worthless.