Yesterday, we saw Christian Rudder at OkCupid, rather colorfully, make this facile argument. OkCupid has a history of experimenting with its matching algorithm and selections (and hence with users).
"But guess what, everybody: if you use the internet, you're the subject of hundreds of experiments at any given time, on every site. That's how websites work," says Rudder.
And despite his finger-wagging, dick-like phrasing that only entrepreneurs can achieve, Rudder is correct to a point.