An interesting idea would be to have agents pay in advance for either proposed content, or already created content that hasn't yet been released. They could also propose content that they would pay for. Once that threshold has been reached, the content get delivered either after creation or instantly. It also goes public at that point. There will be free-riders on that model, but at least the content gets seen. So blurry is free, discernible costs.

Maybe just accept messages from agents, no matter whether they want to pay or not? So basically offer them a feedback form and allow a conversation to be initiated. You could even host that conversation and charge for it, I suppose.

BTW, your comments are flagged/dead so I couldn't reply below.

FWIW, I just fast-coded a stats/tracking system that marks visitors "likely human" "suspicious" and "bot" .. works pretty well too and runs across 1 domain and 5 sub-domains simultaneously and the tracking script also enables any user to submit a comment through a modal popup. It doesn't track the admin either if told not to.

Imagine being able to talk to a bot - "who are you, what do you want and who sent you?" It's like something out of Blade Runner with "Likely Human" being an apt alternate film title.