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Personally I would not use FB Connect unless you're already a name I can trust.

If I'm not wrong, when you use FB Connect, you can capture only the user id. The disadvantage is you are not able to build a meaningful customer database, but this also depends if customers info is important to your startup. Secondly your startup will live and die with Facebook. This makes sense only if your startup is a Facebook app.

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> If I'm not wrong, when you use FB Connect, you can capture only the user id.

The information you can currently 'cache' from facebook, is called basic information and currently consists of:

> user ID, name, email, gender, birthday, current city, profile picture URL, and the user IDs of the user’s friends who have also connected with your application.

You can also easily request other information, such as email address, without any additional dialogue box. I'm not sure whether most users would realize that this additional information is being shared, or not.

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