“The New Yorker” cartoonist Peter Steiner put it best: “On the Internet, nobody knows you’re a dog.” It’s tough to figure out an online persona’s real identity, especially on sites such as Twitter, where all you need to sign up is an email address. Unlike Facebook, which requires a real name and some identity verification, Twitter allows you to start an account with any username, profile photo and content. If you run into a spammer, a follower who’s impersonating a friend or a fake celebrity account, it can be easy to get duped. Warnings Writer Bio
