They look very much like the stereotypical monsters you see, big head, large eyes. When you see them you can be scared but when you turn your head away from the Silence, you forget all about them. Although they don't seem to have a mouth, they speak, presumably using telepathy.
There's no register feature and no need to give an email address if you don't need to. All messages will be reviewed before being displayed. Comments may be merged or altered slightly such as if an email address is given in the main body of the comment.