In today's National Post via Slate:
"Celebrities take on all kinds of causes. They campaign for presidents, and they rally to save the women of Darfur and the hungry masses of Bangladesh and Africa. Some of these appearances may do some good, while others are merely benign grandstanding. But wealthy, toothsome, vivacious and sexy Jenny McCarthy's impassioned campaign is actually harmful."
Why? Because against all scientific reason she is promoting her opinion (and naturally her book) that measles-mumps-rubella vaccines cause autism. And top celebrities - like Oprah - are buying into this dangerous hogwash.