A dog tapping away at a computer keyboard turns to another dog and says, "On the Internet, nobody knows you're a dog."
The cartoon by Peter Steiner, which first appeared in The New Yorker in July 1993, perfectly encapsulates the world we live in today.
How do you trust someone to be who they say they are on the Internet?
The question has bubbled up again after news broke that Notre Dame linebacker Manti Te'o fell for a "catfish," someone who fakes an identity online to finagle his or her way into a fraudulent romantic relationship.
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What steps do you take? What are the signs you look for to verify someone's real? Were you still duped? Let us know in the comments section below.