I'd never used Google Docs, not being a great creator of shared output. I really should get out more.
Went to a book launch last year by a Warwick academic: the tome was co-written by a lecturer in New Zealand, so the Warwick author described writing his part, and then waking up next morning to find out that part of his text had been re-written and added to. Wonder if they used Google Docs?
To use the cliche, if Shakespeare were alive today, he'd be writing Coronation Street scripts with John Fletcher (no, not that John Fletcher) using Google Docs.