excerpt from online marketing blog [our bold]:
The Benefits of Facebook Connect
For marketers:
First, it facilitates getting mentioned in Facebook users’s news feeds, which has been the holy grail for marketers because it raises awareness of your business and delivers an implied endorsement.
Second, it provides a treasure trove of user data, allowing über-targeting. You can literally customize the content of your page based on the visitor’s Facebook data, such as his age, gender, location, likes, dislikes, relationship status, even networks, groups, and pages he’s joined – or “fanned.†As a simple example, if you know a visitor is a fan of the band U2, you can highlight your U2-theme stationery, T-shirts, dog bones.