<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by tiburon1K:
There was a thread in "Mileage Run" which helped me to buy ex-CMB [CMB-SIN-SFO-SIN-CMB] for ~$1500 J and ~$2400 F on SQ. I did buy it using SQ web site.
</font>
You MUST originate from the place you purchased your ticket. SQ is very deligent in catching people who skip the place of origin and try to start your journey in Singapore!