Musing about writing as a "keeper of knowledge"

I've been reading the Handbook of Writing Research, particularly the Bazerman & Rogers chapter on Knowledge Outside Modern European Institutions. In the first section the authors define knowledge and then compare the differences between oral traditions and writing.

These two quotes stuck out to me:
"The invention of writing made knowledge more readily and realiably remembered, transported across time and space, and shared, by copying, among multiple people and sites" (p. 143).

"Writing facilitates inspecting exact wording to hold authors accountable for what was said, as well as comparing accounts for inconsistences, differences, and contradiction" (p. 144).

Reading and thinking about these two quotes in light of the question of "authorship" (Prior & Lunsford) chapter AND connecting to a conversation I recently had with my husband about the practice of "tagging" on the internet has led me to ask these questions.

1. Has Web 2.0 made writing more flexible to interpretation, much like oral tradition, due to the way writing consumers can reorganize an author's thoughts and intentions for others?

2. Even the fact that I used the words "writing consumers" instead of readers seems important to me. Why does that seem to apply more to Web 2.0 use instead of reading text from a book?

3. Ultimately, what has technology and the ability to manipulate text done to 'knowledge' that authors attempt to communicate?