Since the early years of tech, engineers and designers tried to overcome the separation between their product and their users. What if I tell you, you do not have to worry about this anymore? With the emergence of VR, your users are finally in your applications. This changes the way people interact with the digital world dramatically. And it increases your power over other people's lives. But with great power comes great responsibility – this is why my talk will focus on Virtual Reality in the web and what you as a developer or designer can do, if you do not want to harm your users. We will begin with a short introduction into the basic concepts of virtual reality, like stereoscopic images and tracking. Then we will take a look at the current status of the WebVR ecosystem, like the WebVR API and the Gamepad API. This will lead us to the topic I'm most passionate about: a good user experience in VR applications. As developers we are confronted with various questions: How can we avoid triggering simulation sickness or what can we do to prevent triggering phobias or seizures?