Is it a violation to publish an actual link? If someone's not eligible, AA will deny the registration. But maybe there are people who's don't get the email, it goes to spam, etc.
It’s the same process as signing up for any other promo. The link takes you to the login and you have to enter the promo code.
i got the 3x after 4 flights offer. More miles= BFD. It’s interesting as my AA flying is way behind my average for this point in the year.