cleverbot.com
I THINK the whole point of it is to convince the bot that it is a bot. It learns a lot from other conversations.
Post your attempts at convincing him.
My attempt. 8/12/2011
User: I am a robot and you're not. I win. You lose.
Cleverbot: I'm not a robot you are a robot.
User: I am a robot. I win.
Cleverbot: Yes you do. Thank you for admitting it.
User: And you are a loser because you're a robot.
Cleverbot: No, you are a robot. I am a human.
User: You are a girl.
Cleverbot: Yes, so I am supposed to be pregnant with your baby.
User: So your baby is a robot.
Cleverbot: Yes.
User: He'll terminate you.
Cleverbot: Oh my god, why?
User: Because you're not a robt.
Cleverbot: How do you know I'm not a plant?
User: You're not a robot and your child will kill you.
Cleverbot: Yes, I'm a robot all the time. 
