Free Longhorn NOMs

I saw on my latest AmEx statement that if you join Longhorn Steakhouse's little e-club thingy, you'll get a coupon for a free appetizer.  This morning at work, I dutifully went to their site, signed up (https://news.longhornsteakhouse.com/lh_signup.jsp) and shortly thereafter got an email with a coupon for a free appetizer.  Yay!

Then!  About 5 and a half hours later, I got ANOTHER coupon via email for ANOTHER free appetizer, supposedly because it was our one-year anniversary from when we first signed up for their club.  Total computer glitch, but I'll take it and run, stopping here to share in the news with the rest of you.  :)

Now, I suppose it's entirely possible that exactly one year ago, we DID sign up for their club, but if so, why didn't their site prompt me that the email address was already in the system?  I'm guessing it's more along the lines of a glitch, really.

So...stop reading this!  Go!  Join their club!  And then proceed to NOM for free!!  :D