I got sick of waiting for a new 1.5 native version and my users wanted this feature, so I've made my own. It is working and I'm putting the finishing touches on it. It will be available soon.
* LIKE thumbs up system for "liking" content items
* Karma - CB user rating system
* Golf Score Tracker
* Jitter - status update system. "What's on your mind?"
* CB Author Plug - Shows CB author link and avatar in content items. J1.5 compatible and very customizable!