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If you've ever been in a position where you've needed to log onto MSN Messenger on different computers then you'll know that you get blocked from doing so.
MSN Messenger Polygamy allows you use multiple copies of MSN Messenger at the same time, so you can log on as many times as you want from multiple computers. MSN Messenger Polygamy supports all versions of MSN Messenger including 7.x, 8.x, 9.x and 14.x - this, of course, means Windows Live Messenger too.
MSN Messenger Polygamy isn't actually an IM client but simply a patch that works with your version of MSN Messenger. You can activate and deactivate the patch in a click, although you can only do this before you log on. If you don't have a supported version of MSN Messenger installed, MSN Messenger Polygamy will automatically take you to the developer's site to download one.
MSN Messenger Polygamy is a simple patch that allows you to log into multiple versions of Messenger on different computers.