Who is invisible ....

Easy and simple way to know who is invisible in Yahoo .
(without programs)

First of all :

1) Open your yahoo messenger

2) Double click on the person we want to check his status :



3) IMviroment button and choose like in this image:
choose (doodle)



Wait 20 sec

Now if this message appears:



this mean his offline now .

But if you diden`t receive the previous message this mean he is invisible.