Well, I know two people who told me that manga was poisoning the mind... but i really don't know why. One of those people said that it was the plot that was very unoriginal- action stories revolve around the only hero thingy? i don't know about why the other one said so. Maybe because of obsession?
Well, I've seen people with extreme cases of anime addiction . . . and it's damn frightening. They usually don't think they are either, but whatever. I don't see it as poisoning as any other media medium such as american cartoons or movies, I just think it's amazing how much freakin' anime apparel they sell in Hot Topic . . . and that people buy it.