I guess that the top of her pyramid is “visible” in the sense that it is the group of activities that is most public, and most discussed in articles about collaboration.

I like the cyclic layout you created. Based on that, my way of expressing it linearly:
1. Purpose, values, self-awareness, and motivation. (private study; journaling)
2. Find and discover people. (find and observe communities)
3. Connect and relate. (follow, like/favorite/+1, say hello)
4. Share what you know, have, and think. (tweet, retweet, comment)
5. Active participation, open to replies, (blog, make things)
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6. Form team with mutual goals.
7. Coordinate and plan.
8. Act.
9. Evaluate the results.