Skank Barbie, Update
Blogging Baby did pick up the post - aren't they efficient? You can find it here.
The BB blogger who wrote the post, Melissa, comments that she's not one to demand a product be pulled, because every parent has the right to make these choices for themselves.
Upon reading that, I realized that this is probably what many thought I was suggesting, when in fact, that wasn't foremost in my mind. So, to clarify: How you write your letter is entirely up to you.
My letter will not not say, "This is a disgusting product! Stop making it this instant!" (If that's what you want to say, you go right ahead and say that. It's a good message!) My letter, however, will say, "This is a disgusting product, I'm disappointed in you, Mattel, for dreaming it up, and here is why I would never, ever buy it." I figure, if enough people write that kind of letter, the product will be discontinued, without anyone demanding that they do so.
So, write your letter with whatever slant seems best to you. It doesn't matter, so long as you write that letter!