“What you find in real life with narcissists is that they're very good at gaining friends and becoming leaders, but eventually people see through them and stop liking them. Online, people are very good at gaining relationships, but they don't fall off naturally. If you're incredibly annoying, they just ignore you, and even then it might be worth it for entertainment value.”

W. Keith Campbell, head of psychology at the University of Georgia, as quoted by The Atlantic online