WPBook

Comes in two versions, depending on the webmaster's needed features.

Installation:

Unpack and upload it to the /wp-content/plugins/ directory.
Activate the plugin through the 'Plugins' menu in WordPress.

What is new in this release:

• Updated Facebook SDK to 3.2.3. Would be nice to go to 4.0 at some point, but that would exceed WordPress' own PHP requirements (5.4 would be required).
• Rewrote the permissions checking logic to no longer rely on FQL which is no longer supported in the API v2.1
• Rewrote the comment import logic to not use FQL
• Add HTTPS for global Facebook Gravatar

What is new in version 2.7.1 / 1.6.4:

• Updated Facebook SDK to 3.2.3. Would be nice to go to 4.0 at some point, but that would exceed WordPress' own PHP requirements (5.4 would be required).
• Rewrote the permissions checking logic to no longer rely on FQL which is no longer supported in the API v2.1
• Rewrote the comment import logic to not use FQL
• Add HTTPS for global Facebook Gravatar

What is new in version 2.6.8:

• Fixed ? vs & issue with url for granting/re-granting permissions.

What is new in version 2.5.3:

• Cleaned up typo in wpbook_cron which may have caused issues with comment import.
• Removed deprecated warning in add_options_page.

What is new in version 1.4.2:

• Eliminated check on page access_token as that really just comes from the user access token.

What is new in version 1.4:

• Updated logic to accommodate Facebook's deprecation of "offline_access" tokens.

What is new in version 2.4:

• Added wpbook message field to meta box. This will be used over the excerpt if it is present.
• Bugfix for duplicate post_meta (custom fields) - never interfered with functionality but did create unnecessary date. Now only one wpbook_publish per post.
• Added user_groups permission for publishing to non-public groups.

Requirements:

• WordPress 2.9 or higher
• Facebook account credentials
• PHP 5 or higher