Online code for indigo/chapters $5 off $50+

I registered my plum rewards card online and was sent a code for $5 off an online purchase of $50 or more that expires December 3rd and I know I won't be using it. Is this something only I can use, or can I give it to one of you to use? (or more? Is it possible it would work for multiple people?)

If only one, first person to PM me gets the code. If multiple people can redeem it, let me know and I'll post the code. The only reason I'm not posting it now is because I don't know if I'm allowed to do that? Hopefully someone knows and will let me know! Thanks!