You need it to be smarter. It needs to look just like someone using a real device - visiting at sensible times with sensible durations - but slowly mixing in to

You need it to be smarter. It needs to look just like someone using a real device - visiting at sensible times with sensible durations - but slowly mixing in to the visitor's actual profile and visiting enough of the "wrong" sites to begin poisoning the data well. And you can't poison everything the same way. You need to make different users have their data poisoned in different ways, so that you can't just filter it into background noise but it becomes impossible to meaningfully filter the data to draw any one conclusion. I would love it, if I could build such a thing.