No guaranteed, faithful audit trail is given by Google Docs. Logs are lost by Google because of (1) deleterious forced upgrades (2) forced space optimization (3) no downloadable backups preventing loss.<p>1. Revisions Deleted by Upgrade: Google Docs' last official upgrade did not save, nor migrate, old Revision History to their new version, resulting in total data loss and no alternative. <a href="http://productforums.google.com/d/topic/docs/Tsd-E-bzsh8" rel="nofollow">http://productforums.google.com/d/topic/docs/Tsd-E-bzsh8</a><p>2. Automatic Revision Pruning: Docs deletes versions to save space, but you cannot control it, nor mark versions to save forever. <a href="http://support.google.com/drive/bin/answer.py?hl=en&answer=95902" rel="nofollow">http://support.google.com/drive/bin/answer.py?hl=en&answ...</a><p>3. No Downloadable-Publishable Revision History: Contrasting Google Docs' promise to share our work, only you and people who can edit your document are able to view Revision History, making real public transparency/accountability/downloadability difficult if not impossible.<p>Google is known for their likeable Data Liberation Policy. but it severely misinforms people who do not know Revision History is not faithfully backed up.<p>I welcome Google to commit to never losing anything you share and write, and optionally allow others equal transparency to see everything we save (or tried...) and share.<p>So if Google Docs' deleterious behavior continues, people will continue to be disappointed if their archived data is unpredictably, untrackably, so very loseable.