I was not targeted via email and it did not show up for me in the bonus section of the HHonors Dining site.

However, I was able to find the link by poking around on the American Express website (I found it at the bottom of the Account Summary screen). The website ad (which I wasn't able to copy) indicates the offer is available to anyone with an HHonors Amex.

At least from my reading, the posts in the iDines bonus thread suggested the only way you could sign up was if you received an email invite; so, my point in posting was that it seemed to be available to all HHonors Amex holders (i.e., a slightly broader, but still targeted, group of people).

Did I answer your question? Or, maybe miss your point entirely?