How Quickly Do SPG Amex Referral Points Post?

Last week I posted about the outstanding SPG Amex signup bonus.  I've had half a dozen people ping me for referrals and a couple have already posted (thank you!).

ATRP reader Elissa emailed me on Sunday, 2/19 to ask for a referral.  She applied and was approved that day.

The 5,000 points posted to my account on 2/22 so just 3 days later.  Kudos to Starwood for such a compelling offer for both parties and for posting the points in such a timely manner.  Who else is interested in picking up this card?