Interesting addition from the HA world:

Points Sharing: Points Sharing is a Card Program feature that enables the Primary Cardholder to be eligible to initiate linkage and share points between a network of up to 10 additional Atmos™ Rewards accounts. Cardholders may only be part of a single Points Sharing network. Points can be used to make award redemptions on AlaskaAir.com. After initial linkage, the Primary Cardholder can only change each linked Atmos™ Rewards account once every 12 months. Transfer must be initiated by each respective Atmos™ Rewards account holder. Only redeemable points are transferable. Status Points are excluded from Points Sharing. Participation is subject to the Points Sharing program terms and conditions.