1) The viewing and visually representing parts are areas that I would not expect to be components of Language Arts, but it makes sense to have them there because if a commercial for a horror film wrote their ad in a font like the one I'm using here, the horror aspect of the film wouldn't be too convincing.

2) Yes, viewing and visually representing should be a part of the list because an author can send multitudes of messages to its viewers by changing how the text looks. For example, you could use red, droopy letters to say "This is going to be scary," or bubbly letters to say "This is a feel-good film." We could avoid condoning influences of the media on our students lives by teaching them that imagery use is the majority of the reason why products are sold and that people often judge a book by its cover.

3) I've had some experience using all six areas of Language Arts in school. My favorite one is visually representing because there are some ideas that are better expressed in a form other than written or spoken. Sophomore year in high school, after reading "Lord of the Flies," we were told to make a visual representation of a theme in the book. My partner and I decided to make cupcakes and use chocolate and vanilla icing to signify who were good and bad people. Vanilla meant good, and chocolate meant bad.
Viewing: After, or while, reading a book, sometimes we watch the movie component that is based on the book we've/we're read(ing).
Writing: Most assignments are in written form because it's the easiest way for a teacher to know that his/her students understand what's going on in class. I don't like this component much because sometimes the question to be answered isn't one that I feel I have the right words for.
Listening: class discussions, what the teacher wants us to get out of a lesson. This isn't much fun, because I like to talk. Although, I like hearing what other people have to say during discussions.
Talking: Like I said, I like to talk. Giving presentations, not so much. I tend to remember group discussions about a topic because they're less formal and less stressful than a presentation would be.
Reading: Mostly homework.
My preferences haven't changed much over time, but I wouldn't rule out the possibility that they might change in the future.