First of all, thanks for spreading the word about Blinkist! We really appreciate it.
For every direct sign-up through the link, you'll get an extra week tacked on to your account (only if you're a basic user and have not yet subscribed). Only if someone signs up using that specific link our system will add the free access to your account.
If you require further assistance with this please feel free to contact our Support Team on support@blinkist.com.