I really have no idea how to tell btw Malay/Thai just by viewing.......?
As bro nedword said with words probably yes you could tell but what if they start replying in cantonese if they have been in HK long enough......
Personally not too bothered and i do prefer to choose the lighter skin complexion type girls.....
Maybe another way to differ the type was that thai girls were cheaper back then than malaysian......but not sure what the pricing structure is now.
The last malay i tried in MK only cost me $230 ....that was in Nov06