After four months, Facebook is set to open its timeline actions to developers this week, according to AllThingsD. The feature is an addition to the Facebook Graph API that allows developers to assign verbs for actions users perform within applications. For example, how users now "like" things, they'll also be able to "read" articles, "play" games and "listen" to music. I would expect many, many actions to be submitted to Facebook for approval, especially related to game-specific acts. It's too early to tell how closely the social network will watch its pending list of actions, though there's a clear approval process.
As anyone with multiple social networking accounts can attest to, keeping track of them all can be time consuming. AIM Lifestream is a service from AOL that aggregates a number of social networking sites, and now Lifestream has been integrated into AOL Instant Messenger.