[Lostie!]

African-American? That term refers specifically to the black population of America, hence the "American" in the title. It's not a term that refers to black people in general. (That said, I'm sure there are some African-American viewers, we know that there are people from overseas who follow BBUK).

But in answer to your question about what the black viewers think of the representation of the black housemates, I don't see why they should care. People know that they're individuals, not representatives of the black community as a whole.