Yahoo! Pingbox, their embeddable IM application for web pages, is now available for Facebook. You can add a Pingbox to your Facebook profile and visitors will be able to IM you without downloading or even signing on to Yahoo! Messenger. And if you use Yahoo! Messenger, you can receive IMs from your Pingbox even when you are not signed into Facebook.
This new Facebook application has the same customization tools available in other Pingbox versions. You can personalize your greetings, change the look and optionally require visitors to give themselves a nickname before they IM you.
Adding the Pingbox application to your Facebook profile works differently than adding it to other websites. For Facebook, you visit the Yahoo! Messenger Pingbox application page in Facebook.