[mootothemax]

Like the header says, it had been paraphrased/had structure modified to remove watermarking elements unique to each individual it was sent to.

Yeah, that's kind of what I mean as well.

If it'd been written to only a few people, there are an incredible number of ways to watermark the content.

E.g. did all of the emails even include a questionnaire? Were some emails 5 words long, and others 5 paragraphs?

I guess the easy/lazy way would be to tailor the questions to each unique email.

Basically, I think the sanitation excuse is a bit too convenient, and an attempt to buy into the super-secret mythology.