This is it. This is what I've come to so far. Wow. Just read the credits. That's what it is.
So far, my theory is that someone wasn't content with what they had. Jealousy struck them as they continued to try and find what others had that they didn't. They, over time, forgot about being cautious. They forgot their own mantra and just kept digging and digging. There had to be something, right? Something that could finally give them the fame they always wanted. That came true. Just, not in the way they wanted. As they said themself; "Arrogance kills people. Curiosity kills cats." They had found something. Something that had consumed them. They were part of the site. It brought them pain, every click. Yet the satisfaction they had once craved had now brought them what they hated. And yet, they wouldn't give up. They shared a "vessel" with someone, yes.. but that wouldn't stop them from trying to be free. Little did they know, that freedom would come that the cost of anothers life.