I just noticed a blogpost about how to create your own IM button that you could put onto your blog or e-mail signature. It's very easy to do just go to http://www.gowindowslive.com/messenger/button/Default.aspx and create your own button.
Once you have created your button, it is also easy to add it to your Windows Live Space, Outlook, Hotmail or Windows Live Mail.
I've created a button and putted onto my blog, feel free to add me if you want to connect with me.
Excellent site, It was pleasant to me.