The Windows Live IM control is a very easy way to add a "live chat" feature to your web site.
You can either use the server control that is in the Windows Live Tools for Visual Studio, or you can host the control with some html you can generate automatically
Whichever way you create the control, you "hardwire" it to a particular Live ID who then receives the incoming messages (via Live Messenger) - this user also needs to accept that their current status will be shown on the web site.
While testing make sure you don't login to the full IM and the Web control with the same account at the same time - or you'll be told that you "cannot start a conversation with yourself" - though some may disagree
Cheers
Ian
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