LinkedIn is one social media site you must be careful while using. Casually applying to different jobs is all fun and games until you go from barely using it to being on it every night from 7-10. If you start doing that and you're connected with all of your current employers, good luck, Charlie. The worst thing about LinkedIn is it tattles on you. It shows your connections when you're online if you've viewed their page and your entire working history. That's way too much information for college acquaintances to know about. While that can make you feel paranoid, it also gives you a level of power. If you really want to get fired but don't want to do anything drastic, change your LinkedIn profile to "Open To Work." That's precisely what one employee did after they were put on a PIP (performance improvement plan) after four other employees quit.