book 奖励计划
3 奖励计划
Blinkist
For every direct sign-up through the link, your friend will get an extra week of trial access and you'll also get an extra week tacked on to your account if you're a basic user.
Book Outlet
Give a friend a $10 coupon to use on their first Book Outlet purchase of $25 or more and you’ll earn 200 points ($10) to spend on Book Outlet once their order has been placed and shipped!