It's really sad that it's come to this. No one should have to defend their identity so vehemently. If you're a fan of Jared, Jensen, or any celebrity, really, they are in the public eye enough that you have a good idea of their personality, interests, and demeanor. Therefore, if and when you encounter a so-called online persona claiming to be them, there are certain ways you can tell if they are real. For one thing, if they're on Twitter, and they're not verified, it's not looking good for the person's case. For another, if none of their real-life celebrity friends, fiances, or co-stars are following them, it's most likely a fake. And of course, if the person starts arguing with fans (especially over whether or not they are real), their defensiveness should speak for itself.