You might be right. I'm sure Facebook have a great number of metrics that they use to guide their ranking of content. I do however wonder how accurate metrics a

You might be right. I'm sure Facebook have a great number of metrics that they use to guide their ranking of content. I do however wonder how accurate metrics are as guidelines for a platform's longterm health- I think some things are far easier to measure than others, and companies tend to put short-term engagement over long-term retention anyway. It's probably very easy to sell slightly-invasive advertising to managers, on the basis that you can straightforwardly quantify the money you're making from it. People's subtle feeling of being creeped out is basically impossible to measure, and would never show up in the short term anyway, but I bet it changes the way they act on the platform, and the platform's value proposition to its users. It's also possible nobody is actually creeped out - but honestly, it just needs to be a sizeable portion of journalists and politicians before you start having legistlative problems. How many people were genuinely worried about nuclear power, for instance?