Have you ever wondered why a person from your Yahoo Messenger list it appears all the time offline? Were you curious,to find out if its really offline or its invisible?Did you ever wanted to detect invisible users,and didnt know how to do it? Now this wont be a secret any more for you,because this is the first Yahoo Messenger Invisible Detector on the App Store. It detects the real state of the user:"Online","Offline" or "Invisible".
You can be the coolest one on Yahoo Messenger