2,500 SPG Points for Adding an Authorized User

Starwood and American Express are offering 2,500 bonus SPG points for adding an authorized user to your personal (not available on the business version) SPG Amex card.

This direct link should work.  Login with your Amex credentials and you'll be taken to a screen where you can view the offer and input information for your authorized user.  

2,500 SPG bonus points for adding an authorized user

Unfortunately, I'm the only one in our household that currently has the card (have since 2004) but I've already taken advantage of the offer by adding Emily to my card.

Bonus terms

I value 2,500 SPG points at around $55.  Keep in mind that 2,500 SPG points converts to ~3,100 airline miles so this is a strong offer for what amounts to 5 minutes of time.