Today Facebook announced the release of a new comments plugin.  Facebook says:

The upgraded Comments Box uses social signals to surface the highest  quality comments for each user. Comments are ordered to show users the  most relevant comments from friends, friends of friends, and the most  liked or active discussion threads, while comments marked as spam are  hidden from view.

We were proud to be asked by Facebook to launch with them today.  See the plugin in action on Active.com at http://www.active.com/running/reno-nv/7th-annual-renotahoe-odyssey-relay-run-adventure-2011 or on Active Local at http://local.active.com/activities/4060-04-17-11-the-presidio-10.