Group deals have just taken off in South East Asia and sometimes I buy a group deal and forget when the deal will expire. To help me remember to use the deal before it expires, I created a list called 'Groupdeals' in my RTM and input all of my deals/vouchers there - e.g. Facial @spa and put the expiry date in the due date field. If a particular deal requires an appointment before I can redeem it, I tag it with @appointment. Now I can just look at my 'Groupdeals' list and see which vouchers are nearing their expiry dates and use them. No more losing money with expired deals!