Cleverbot is an Artificial Intelligence conversation system specially designed to learn from the conversations that it has with other people trying to mimic the human behavior in a conversation.
To find out the level of intelligence of this kind of artificial entities the archi-famous mathematician Alan Turing proposed in 1950 the Turing Test . Basically, a human judge engages in a natural language conversation with a human and a machine designed to generate performance indistinguishable from that of a human being. All participants are separated from one another. If the judge cannot reliably tell the machine from the human, the machine is said to have passed the test.
Every year the Turing Test takes place, this year was celebrated on September 3rd at Techniche 2011, IIT Guwahati, India. In this scenario, several human judges had 5 minutes conversations with another entity (they ignored whether the entity was human or not). Some people believe that if 50% of the judges classify the entity they are talking to as human when in reality it is a machine, then the machine has passed the test.
This year Cleverbot was classified as human 59% of the times and people might say it passed the Turing Test, but we humans still have hope... humans where classified as humans 63% of the time. I will start getting scared when Cleverbot is classified more often as a human than real humans xD
Anyway, it is fun to talk to Cleverbot, you really have to try it! How? You can do it right here! Just enter some text in the text bar above and hit the "Think About It!" button. Have fun!!
EDIT [2011/11/14]: I removed the widget to talk to Cleverbot directly because it was causing undesired behavior on the website. You can still talk to it by clicking on its logo and visiting Cleverbot's homepage.