While Palm's Facebook applciation is admittedly much less than its counterparts on iPhone and Android it is a welcome addition to the the App Catalog. It lacks many features, but what it is good at what is does.
Essentially, the application is twitter feed of facebook. It allows you to update your status and comment/like other people's statuses. If you have already linked your phone ot the your Pre it will not require any login.
For those looking for a more featured filled facebook experience, I recommend checking out Palmbook on precentral.net. If you need help adding homebrew to your Pre, read our how-to
