Incorporate a NDA in your terms of service, essentially giving them a gag-order, they may not release transcripts publicly.
When did webhosting back in 03-04, I would occasionally have a customer complain about something that wasn't my problem, they would raise a storm, and go post about it on WHT. Whenever that happened, I saw an increase in sales/signups for a week or so after the fact.
When a customer is bitching and complaining and throwing a tantrum, most of the times, the public will side with the hoster, if the hoster is reputable, and consistently reacts and communicates with integrity and class.