When you spam two things can happen. They will unsubscribe if they like you or they will block you but you still see them on your list. Unsubscribe if they like you because it takes a bit longer. In actuality you will know only at the 'cash register'.
Junk Food Is Safe Too!
Media Junk food is also considered safe. Media like food is regulated, and as cotton candy and potato chips are safe foods, so is spam-media.