LiveJournal.com is a large online community where users can keep a blog, journal or diary. It currently has millions of users, from USA, Russia, Canada and other countries. By integrating the Windows Live Messenger Library into their site, LiveJournal.com enables their users to communicate directly in real time.
“LiveJournal Messenger is a new service for LJ users that provides a quick and easy way to communicate with your friends. You don't need to install anything to use it — just log in to your LJ account from anywhere and LiveJournal Messenger will appear at the bottom of the page. Whenever you turn on LiveJournal Messenger, you can write directly to your friends and receive instant replies and LJ notifications.“ (LiveJournal.com)
Sites that are interested in using the Windows Live Messenger capabilities but want to develop their own UI will find the LiveJournal.com case interesting. The Messenger Web Toolkit already offers a rich set of UI Controls that allows web sites to easily add a customizable and polished Messenger UI experience. Most web sites developers are encouraged to use the UI Controls. However, application developers can create their own user experience on top of the Messenger Library – and LiveJournal did an awesome job with that.