Bad question. Moderation isn't a solution. It's in direct conflict with its bottom line.
As with anything that has serious consequences it should be regulated so that ethical considerations are followed. Porn produced should have a trail of paperwork tracking and identifying the production to individuals. Failure to have proper paperwork results people (content creator and/or distributors) being fined and going to jail. It's completely possible to produce amateur, fantasy, BSDM, MILF looking material with consenting individuals.
The problem is that sexual videos can be distributed easily and without regard (often without knowledge) of the people involved such that the work is spread long before the affected individuals can know what has been done to them. Simply put, unregulated material should be considered illegal.