I guess it is a gamble and huge risk if I book flights for my family members who have different last name and lives in another state!
If they shut you down, cancel ticket and make you explain, it would be a huge hassle. Hate them over doing this.
Sometime ago, I ask a question in a blog about booking awards for a relative in AA forum. I received an email same day claiming to be from AA and warning me to shut down my account if i do anything wrong. They never had my email address. I guess they found me out with IP address.
I replied back saying what the heck did I d o wrong to get this warning about nothing? Never got a reply.