KDan writes: This question pops up regularly on Hacker News. What will kill Facebook? Before that, it was "What will kill Google?" Before that, on Slashdot, it would have been "What will kill Microsoft?" Often, the question is asked with a combination of rage and envy. The questioner doesn't like Facebook, they want it dead, and they wouldn't mind if they were the one who came up with something that killed it. Aren't entrepreneurs charming? However, the question is fundamentally flawed. It's the wrong question. It leads nowhere. The only company that can kill Facebook is Facebook. Here's why.