I've heard alot of bad things about it. It is in our toothpaste and usually our water. Do you think it is good or bad?
http://www.youtube.com/watch?v=WhKXzfvKAj0&feature=PlayList&p=083DD9FDBD63ADCD&index=0
http://www.youtube.com/watch?v=WhKXzfvKAj0&feature=PlayList&p=083DD9FDBD63ADCD&index=0