I'm increasingly of the opinion that split-testing tools are the hidden way Satan influences the world. If your A/B tests keep telling you that you should make the product more user-hostile and less useful, that you should manipulate the users and abuse the commons for short-term gains, something is very wrong - with the tools, the tests, or the world.
Split testing can be used by companies who care about their users and companies who don't. It just tells you how your users react. It's not a substitute for user empathy or regulations.