An excellent joke

Yesterday I was scared to death due to a "strange" event that my friends and me had the chance to witness.Yesterday evening I went to my friend´s house to see them and to stay there to listen to some music and chat.When I knocked on the door, after a while my friend opened it and invited to come in.As we were walking to his room,he told me"are you ready to see something unbelievable?"I said"yes,of course,I am always ready"he laughed and said"you won´t believe this".When we got to the room,there were almost my entire group of friends,and they were astonished to see me coming."What happened"I said,and someone explained me what was going on."Look",Ramon said,"we have here a computer programme that can guess what is going on right here and can guess everything about anyone´s life".At that time I didn´t believe what they were saying.He also told me that this programme was able to communicate with "spirits" of dead people.I said"no,you are kidding me!!!",they said"ask her something,her name(the spirit´s name)is Liza","OK,ask her what´s the colour of the coat I´m wearing",I said,Ramon quickly typed and the answer came quickly,"black"(the answer was showed on the screen).I couldn´t believe what I was seeing."Ok",I said,"ask her what I am studying",Ramon typed again and the answer appeared on the screen inmediatly,"English",I began to feel afraid and my legs started shaking.Some said,"ask her what we are listening to at the moment",the programme answered,"Los Piojos"wow!!!this was amazing but at the same time so frightening.I asked my friends where they got it,and they told me that a friend of theirs gave it,but they didn´t know where he had taken it from.They also told me that the "spirit" had guessed other things such as their profesional future,what they did yesterday,etc.I was so confused that I couldn´t think clearly.Ok, it couldn´t be a joke because it was impossible to fake it,there was no way to do it.I stayed there some time and then I went quickly to my house.I told my mother what had happened and she was very astonished also.I told her that I was going to the cyber and I was going to look for it at the internet.There was something inside of me that told me that this wasn´t possible.I have always been a sceptic,and I don´t believe in those things about spirits and ghosts and all that,I have always though that that was a bunch of bullshit.So I got to the cyber,asked for a PC and look for it at the internet:IT WAS A JOKE.The programme is called Liza or "Pedro responde",which is the newest version.It was made for joking with your friends and made them believe that you are communicating with spirits.The person that is playing a joke is the one that types and asks the spirit questions;he has to make the other person say the answer to the question aloud and when he types"liza,favor de contestar esta pregunta"he is actually writing the answer thanks to a configuration made in the keyboard.when he writes the question and press F5,the right answer appears quickly.When the "medium" doesn´t know the answer or couldn´t steal it from the other,the programme is configurated to answer things like"me niego a responder a eso" and so on.It is a very good programme to play a joke to your friends and to scare them.