So, here we go. We finally have a thread for it. It is the ultimate meta-ethical question, and one that has been debated about for centuries.
On the surface, this seems like an easy question. "How can morality be objective? Ha!" However, when you examine it more closely, it is most certainly not as easy as any one might think it is. In thinking that morality is subjective, it really means we have no concrete moral base and all of our actions are merely a by product of what-have-you that leads us to our decisions that make no sense really. If morality is subjective, we can't call people like Hitler evil. We can't want to punish child rapists. We must understand that with subjective morality, all anyone has is there own moral code, and if someone does something that you feel goes against your own moral code, you have no right to be upset. After all, it is there own morality.
That being said, I still vote for a subjective morality and I'm currently in the process of trying to track down Meta-ethicist J.L Mackie's Inventing Right and Wrong.