Writing in the Mediascape

As we move through the next text about modes and mediums of communication, we are going to keep the following quotation in mind:

"Writing is no longer just alphabetic text--writing is also audio and video. And writing is also hypertext and delivery of multimedia content via the internet and the web. And writing is chunks of tagged text and data floating within databases and underneath the internet in p2p spaces" (McKee and Porter, "Why Napster Matters to Writing" (179).

What kinds of affordances do we gain when we speak of writing like this? What might we loose? How does writing become aestheticized? How does speaking of writing like this change the rhetorical canons (e.g. invention, arrangement, style, memory, delivery) of which we have spoken?