Here is Chat Facebook App version 1.0 for Blackberry Curve 8500 . Once you’ve found a contact, simply click on their name and you can start typing your message with Facebook Chat. When your contact replied their message will be displayed (more or less) instantly.
Download on here by scan this below QR code. 
How to scan are follow as:
- · Open the BlackBerry App World app on your Blackberry Curve 8500 smartphone.
- · Click the Menu key and select Scan a Barcode.
- · Click Start Scanning. Point your Blackberry Curve 8500 s smartphone camera at the barcode image (above) and hold the camera steady for 3 seconds to scan it. BlackBerry App World will instantly find the app you’ve selected.
Alternative Download link : CHAT FOR FACEBOOK BB
download from Appworld : chat for fb Lite
Although the Facebook Chat app is easy to use, it is pretty basic. The user interface isn’t very attractive and chats can display in a way which cuts off the last few characters of each comment. There’s no support for choosing emoticons, either.Just a simple, intuitive, Facebook-inspired interface centered around the most important task – to let you chat with your Facebook friends. Fast, easy and simple.
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