Meebo me

ウェブIMのMeebo、ウェブページへの埋め込みが可能なウィジェットを公開 - CNET Japan
http://www.meebome.com/learnmore.html

meebo

Meebo is a web based IM that lets you log into your IM networks from any computer with a browser and internet connection with no firewall issues.

supported browser:Internet Explorer 5.0+, Firefox, Safari, Slimbrowser, K-Meleon, and Camino

meebo me

meebo me is designed for anyone with a home on the web. If you've got a web page where you'd like to communicate with your visitors, meebo me allows you to see the people who are visiting your web page and chat with them!