UPDATE: This method no longer works in newer versions.
Did you know there is an extra hidden tab in Windows Live Messenger Option dialog box? Its called "Add-ins". Its hidden by default. But there is a registry hack available to enable it.

Here is a step-by-step tutorial to enable it:
1. Type regedit in RUN dialog box and press Enter. Now goto:
HKEY_CURRENT_USER\Software\Microsoft\MSNMessenger
2. In right-side pane, create a new DWORD value and give it name "AddInFeatureEnabled" and set its value to 1
3. That's it. Now open Windows Live Messenger and go to "Tools -> Options" and you'll see a new tab "Add-ins".
This article was posted by VG in following section: Windows Live.
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Kerry
why can't i see the "get more winks" or "get more offerings" option in messenger?
Bobby
do i have to type the name exactly how its written ther bcoz its not working
Bobby
dw works now
Jeff
Ok when you set the value to 1 is that hexadecimal or decimal I did what you said to do and does not work
knokit
I have upgrade my msn to WLM 2009 and I can't see the tab "Add-ins"!! I think I need it to make my OLED show msn messages with direct console!
James
I'm have a add-in I quite like but I wish it could be enabled while status is set to online why do they only work in everything but its quite annoying, anyone got a way to fix this?
James :)
vivek
i already have such entry in my registry and also the value is set to 1.
but still i don't see the add-in tab in my messenger
i'm running
windows live messenger
version 2009 (Build 14.0.8050.1202)
Matt
Vivek, I am having the same problem with the same build. Any help?
Jerry
I did the reg edit, its there its enabled, but still no addins tab!
windows live messenger
version 2009 (Build 14.0.8050.1202)
Pat
It dosnt work for Windows Live Messenger 2009.