Great angle on the word of the week mate. It was really different and I enjoyed it. The spectrum of expression is seemingly undefined and infinite. Just when you think people can push the boundaries no further, they find new ways to break through them!
You're exactly correct, the truth is the spectrum of expression is indefinite because people will always find new ways to actually express themselves at the expense of seeing a boundary or a thin line. Its one aspect of the society that worths taking a look at.