Meebo Me is a widget you can add to your blog or webpage that lets viewers instant message you. Like most IM programs, your status appears on the blog. I use this all the time with my students and have had great success.
I forgot to add this to the last post, but if you want to see how Meebo Me works, I have the widget on my website. Feel free to drop by
http://caferhetorica.org and send me a message if you want to see how the feature works. I'm usually online