At one extreme, we can see that Twitter and Facebook
- make web publishing completely simple for authors of no technical ability whatsoever -- but only at steps 3, 4 and 5;
- shift that difficulty to either side of the publishing lifecycle: steps 1-2, step 6 and step 8;
- make you dependent upon them for step 7 (backup) (Twitter makes this easy, Facebook makes it impossible);
- make steps 9 and 10 effectively impossible.