Exactly what I was thinking. Plus you could do additional analytics. See what IP addresses connect to the link. (Even restrict which IP addresses are allowed to view the page) Run jscript to log if the text is highlighted / copied. You could also counter that weakness by converting the text to a static image so it can't be copied as easily. You could get really into it, and generate a collection of individual pixel-pictures to generate your image, so that if someone did copy / paste the image they'd get a string of individual pixels. Of course they could still recover the image simply by getting the margins right and wrapping the pixels, but if you REALLY wanted to get deep into it, you could have various "nested" pixels that when viewed in your pre-set margins it creates your intended message with "background noise" pixels, but if you scroll the margins then your real message becomes the "noise" and you can have some other message appear once it hits on a different margin. This would give decent plausible deniability.