For a limited time only, you can earn up to 18 mpd when you book your hotel stays with Kaligo. You will have to perform the booking anytime from now until 30 Nov 2018, for stays between now and 31 Mar 2019.
While this may seem impressive, do note that the prices on Kaligo tend to be higher than other OTAs, so be sure to check with other OTAs first before making your booking.
Also, there are other concurrent OTA promotions, such as the 6 mpd promotion when you use your UOB PRVI Miles card on Expedia and Agoda, and up to 9 mpd when you use your Citi Premiermiles card with Agoda.
Full terms and conditions of the Kaligo promotion can be found here.