Do you agree that Americans don't 'get' sarcasm?

i don't think its fair to categorize all Americans together. i personally live for sarcasm :) but some people on here are strange and sometimes its hard to know if they are kidding or not. like the 14 yr old who wants a baby, comeon. so i think online, its hard to get sarcasm across the right way. when 10 people read a sentence, they are gonna get 10 different meanings from it.