Let it be known that I predicted this exact product would eventually come out, where it would be pushed mass market in the name of optimisation, but it will also be used on targets to slowly over time push their opinions or move their personal Overton Window.
Let's say this becomes ubiquitus as Google Adsense etc and > 50% of websites are using it. You're telling me it won't be used by Three Letter Agencies to "target dangerous terrorists to slowly change their thinking towards topics" or even "radicalise someone close to a foreign country's politician to Manchurian Candidate them".