I tried it... with me it looks like I'm staring above the camera, and it turns out constantly staring at the same point is pretty creepy. Normal people look away sometimes, let their eyes wander, and when there's a group discussion they mostly look at the speaker, not at YOU all the time. When you move your head or eyes far enough the effect stops, and the resumes when it makes out your eyes again - which can look unnatural. And if you wink or slowly slide something in front of one eye it looks really freaky (you can see a bit of that in the video).

I wouldn't use it in any serious context. It's only for spooking my friends and family.