This document discusses activity streams and the open standard being developed for sharing activities across different social web platforms. It proposes a format for expressing activities as statements with an actor, verb, and object, optionally including context. Examples of existing platforms that share activities are shown, such as Last.fm, Facebook, and FriendFeed. The benefits of an open acti
![Activity Streams](https://cdn-ak-scissors.b.st-hatena.com/image/square/3dc438432f65badcdb186a4f8ddeba51a5d1354c/height=288;version=1;width=512/https%3A%2F%2Fcdn.slidesharecdn.com%2Fss_thumbnails%2Factivity-streams-1229748153198109-1-thumbnail.jpg%3Fwidth%3D640%26height%3D640%26fit%3Dbounds)