Note that the app in its current state will stop functioning after April 30, 2015, as Facebook has announced to shut down their chat API.
The release of an update around this depends on whether someone reverse-engineers the desktop/mobile websites/apps of Facebook and creates a library that imitates one of the official clients. I will most likely not find the time to do that myself.
Note that even if such a library should be created, I can't guarantee I'll find the time to implement it in this app.
QuickChat for Facebook finally brings real-time Facebook chat to your TouchPad and webOS phones!
• Real-time chat with your Facebook friends
• See your messaging history from previous chats
• Threaded list showing your conversations
• Online friends list, with an option to show offline friends
• Notifications, including customizable sound notifications
• Quickly search through your friends list
• Secure, no third-party servers are involved
• ...and much more!
Download it here for free and install it using WebOS Quick Install or Preware (sha256: 84cffe6564574d2d3c5b8c3d9782da9d6b900e4523931841e2312650306dd0cd)
Advanced users: Add my Preware feed http://pcworldsoftware.kilu.net/files/webos/ to Preware (note that I'm not responsible if that feed gets taken over by some hostile party)
App Review: QuickChat for Facebook | webOS Nation
(German) QuickChat for Facebook bringt den Facebook Chat auf das webOS Gerδt | webOS Blog
(Italian) La chat di Facebook (finalmente) approda su webOS! | webOS Italia
Feedback is welcome!
Note: The developer of this app is not associated with Facebook Inc.