Have you ever been to Egypt? There are lots of arabs that look very similar to Obama, that are not negroes.
I am not talking about Obama, who is half white, but his father, who looks very black based on every picture I have seen. That blog's contention is that Obama has only 1/16 Sub-Saharan black or Negroid DNA, thus his father has 1/8 Sub-Saharan black DNA with the remainder being "Arab" or Caucazoid. Having seen his picture, I really doubt that his the case.