Facebook announced the Facebook wordpress plugin and it was built by Facebook engineers in collaboration with open source partners.This plugin enables you to make your site social in a couple of clicks.
Post to an Author’s Facebook Timeline whenever a new WordPress Post or Page.
Mention friends and Facebook Pages. This posts to their Timelines as well as lists them on the WordPress Post or Page.
Post all new WordPress Post or Pages to a specified Facebook Page.
Like, send, and subscribe buttons can be enabled in a click
full SEO support.
Open Graph Protocol integration.
Activity Feed Box.
Like, send, and subscribe buttons.
To install Facebook wordpress plugin
Login to wordpress (wp-admin).
In your admin dashboard click plugins and select Add New.
Type Facebook in the search field and click Search Plugins button.
After the successfully Installation click the activate Plugin link to activate the plugin.
Download Facebook wordpress plugin. Download link
Unzip and upload it to your WordPress wp-content/plugins directory.
Login to wp-admin. In your admin dashboard click plugins and activate the Facebook wordpress plugin