Invite Friends & Earn Entries to Win a $250 eGift Card! @ Sierra Trading Post

They're trying to fix the link, try this one if interested:
https://www.sierratradingpost.com/get10give10/?giveaway=1&osid=hp-_-daylight-savings-_-110111-_-get10-give10-giveaway-_-2
Alternative method - click on top left to get to home page, then you'll see "Get $10, invite friends" on the right.

It is Sierra Trading Post's referral program. Invite friends to shop with us and we'll send them a $10 coupon to use if they are a new customer. When they make a first-time purchase using their coupon, you'll receive a $10 eGift Card for the successful referral.

*Offer limited to new customers only. Limit one per household. $10 coupon for your friend is valid on orders of $30 or more