I've done that (ask bout salary and other stuff bout work) to some filipinos(i am a filipina & PROUD to be one),they don't get offended.again it's a matter of How you ask them.Of course i always say " if you don't mind me asking".all of them answers my questions with a smile.I don't judge them by their salaries.I'm quite new here in Doha and wanted to know more or less how much they get for certain jobs because if i will (actually planning to get one) apply a job i would like to have a basic knowledge if I'm getting a fair deal.I'm not a rude person, am very down to earth and love interacting with other people.so far never met anyone that's rude or should i say "disrespectful" to me. :-)