Sony has been slow to add new functionality to its PlayStation Network and integrate it across platforms. Take two-factor authorization, for example, which they first announced last April and finally released in August. Today, they've introduced another better-late-than-never feature: adding PSN interaction to their Playstation.com home site. Simply log in using your browser and you'll be able to message all your buddies and view your profile, in case you need to prove to your coworkers how many platinum trophies you've earned.