Is Moral Nihilism a Morality?

[Alan V]

During a recent romp through Wikipedia, I discovered an interesting passage:

Other nihilists may argue not that there is no morality at all, but that if it does exist, it is a human construction and thus artificial, wherein any and all meaning is relative for different possible outcomes.

I found this rather thought-provoking (the last bit that said "moral nihilism is a morality"). This seems to suggest that moral realism may be inescapable... because every brand of moral skepticism carries with it some undercurrent of moral thinking.

Any thoughts on this?

Language can be used in different ways to make different points, so I can see arguing both sides: that nihilism both is and isn't a morality.

However, if all a moral system can tell me is to go along with what my culture says is moral, since it's all arbitrary anyway, then I will be looking for other answers elsewhere.