I don't think I Don't Care about Cookies accepts the cookies. It hides them. And some sites (facebook) take you scrolling the site as accepting cookies and tracking. So when you hide and scroll, you are opted in.
Straight from the "I Don't Care About Cookies" homepage:
By using it, you explicitly allow websites to do whatever they want with cookies they set on your computer (which they mostly do anyway, whether you allow them or not).
By using it, you explicitly allow websites to do whatever they want with cookies they set on your computer (which they mostly do anyway, whether you allow them or not).
I hope Ninja Cookie release their code!