This app – along with the DandyID WordPress Plugin and several other extensions – plays a key role in allowing you to share your complete verified identity within Facebook and across the web. The app displays a list of all your online profiles in the sidebar of your Facebook profile so that your friends can easily discover where else you exist online.
All updates made via your DandyID account will be automatically synced with your Facebook profile in realtime (no need to refresh). In addition, if you have a DandyID Pro Account then the Facebook app will also be stats enabled, allowing you track how your Facebook friends are engaging you online.
Check it out here: http://apps.facebook.com/dandyid/