Tell a friend or family member about Kobo and receive $10 credit (if they buy something!)
http://kobobooks.com/friends
Looks like anyone you recommend gets a 50% coupon in their email (though may also be added to a mailing list--not exactly sure).
May only work for customers NEW to Kobo--not so clear on that part either.
I'm, of course, happy to request 50% coupons for all my friends here who want them
(PM me an address).