Foragr Activity Stream is a WordPress plugin by foragr and distillerlabs that gathers the activity from Facebook, Twitter, Disqus, IntenseDebate, and WordPess and unifies them in one or more activity streams on your WordPress site.
Foragr for WordPress
Uses the Foragr API
Tracks activity from Facebook, Twitter, Disqus, IntenseDebate, and WordPress so it can be viewed by you and your users
Incentives built on top of this activity stream
Foragr Features
Simple installation
All site activity tracked in one place
Completely customizable widgets
Integrated web dashboard
Powerful REST APIs
RSS and Atom feeds for your activity stream
Build community around your content
Download and info: http://wordpress.org/extend/plugins/foragr-activity-stream/