"Texty" - is another forum / chat AJAX user-based share software that allows you to share images, embed videos, text, re-post and share content.

Video Embed Support (youtube.com and dailymotion.com)
Image Uploading and auto resize
Dynamic AJAX Content Scrolling
Share and Repost
User Pages and Community Page
AJAX, PHP5, and MySQL Powered (required to operate)
Tested on multiple browsers
Live data update option
Ability to use it on mobile devices
Full access to source code to modify or add additional features

Demo:
http://grchat.com/texty
Login: demo
Pass: demo

Can you guys try it and let me know what you think...