In Fall 2009 Olof Tjerngren wrote an extension for StatusNet to emit Activity Streams data.

Announcement: http://blogs.sun.com/peterreiser/entry/status_net_is_activitystreams_enabled

Status.net Activity Streams extension: http://gitorious.org/~oloftjerngren/statusnet/oloftjerngrens-mainline

Demosite: http://mb.sunsolutioncenter.de/

Verbs

• create notice: http://activitystrea.ms/schema/1.0/post
• delete notice : http://community-equity.org/schema/1.0/delete
• favorite notice  :  http://activitystrea.ms/schema/1.0/favorite
• unfavorite notice  : http://community-equity.org/schema/1.0/unfavorite
• comment notice  reply : http://activitystrea.ms/schema/1.0/post
• view notice : http://activitystrea.ms/schema/1.0/play
• join group: http://activitystrea.ms/schema/1.0/join
• leave group: http://community-equity.org/schema/1.0/leave
• follow person: http://activitystrea.ms/schema/1.0/follow
• unfollow person: http://community-equity.org/schema/1.0/unfollow