Just because you are paranoid doesn't mean people really aren't following you.
Unlike the conversation you have or the pictures you pull out of your wallet in a PHYSICAL third place, the things you say and show online follow you . . . forever! Therefore, in your online third place, you have to be bit more careful, more conservative, more thoughtful. Potential employers are getting online to see what you are like. That embarrassing picture of you at the party or the statement about your previous boss, or . . . are influencing their decisions. You need to treat online spaces more like business meetings where you boss is present than casual meetings with friends at the local coffee shop. Be careful with what you say and show. If you wouldn't want your boss to see or read it, don't put it up in the online third place.
They ARE watching you!