You must be thinking how to go online offline in such high speed on yahoo messenger ? Are you not aware of this ? Let me show the trick to do this.
First let me show screenshot of this thing I am talking about so who haven’t faced this thing can get what I am talking about.

He is annoying by going online offline in high speed
Shocked ? Well he is not doing any trick with his internet connection nor he is signing out and signing in so fast.He is just going invisible and coming in online mode.
So as a result of this you can see his alert above taskbar.You can open the status menu and press i from keyboard.This will make you invisible.

After opening the menu press i to go invisible
Very next second select Available from same menu which is the first option.Do this rapidly n in speed.
You can code a software in Vb .NET for this very easily.Hope yahoo fix this problem soon, till then I will enjoy annoying my friends by my software D-:
To get protected from this you can off this online offline alerts for all friends from
Messenger –> Preferances –> Alerts & Sounds —> Uncheck “showing a message at the bottom right corner of screen”
Press OK
Jul 27, 2011 at 14:33:00
How to make like the first pic? I want to try it.
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