Kinokuniya here launched their Privilege Card this weekend. At $21 a year for a 10% discount on all purchases, I see no reason to get it since I spend less than $210 a year at Kino. In any case, I can always wait for the 20% storewide discounts that they offer three times a year.
Speaking of which, if you're thinking of picking up a copy of A Defining Moment: How Singapore Beat SARS at the sale, don't bother 'cos the discount doesn't apply to "government publications", and this is one of them. Go get your copy from Select Books -- support local independent bookstores (assuming they have copies in stock)!