Criticizing the practices of other countries' governments is one thing, but it's really not fair to make blanket statements about our own fellow GH members.
Personally, one of my best Classifieds experiences was with one of our Vietnamese GHers. I had a Miami keyset package that USPS had totally screwed up tracking for, and this person really went out of his way to respond to me and help inquire about the package's status. Plus, he was genuinely happy when USPS did finally deliver the keyset and even asked me to share pictures of the keyset on my board.
Alternately, my most negative Classifieds experiences have involved well known, GH forum regulars who reside in the US.
It really depends on the person and not where they come from.