Yea, the first time this happened the Genius kept it for repair, the second time I was blamed and then I was told they're repair it just this once cause they did it last time.
Do you think your spot appeared due to pressure or bruising?
Could be from pressure. I try and be really gentle with my computers and I rarely move it, but it was a couple years old and may have been due to my handling of it. I am not sure though.