Facebook’s reach continues to grow as popular web destinations open their doors (and users) to the Facebook Open Graph API. While companies like Pandora and Yelp have developed custom API integrations, other sites like BuzzFeed and Levi’s are testing the waters with more simple, streamlined methods of implementation with the help of Facebook’s Social Plugins. These plugins are easy to add to any site (since they’re just one line of HTML) and bring sociability to every corner of the interweb. Here are a few great implementation examples of Facebook Plugins from some popular online destinations:

Like Button

Levis.com
Levi’s has implemented the like button across it’s entire product line on the website. Users are able to ‘like’ a specific product and add a comment, which then posts an update to their Facebook feed. This also gives insight to the most popular products based on the number of times that product has been ‘liked’ by their customers.

Get the Like Button code.

Login Button

JibJab.com
JibJab’s Facebook login allows users to easily authenticate using their existing Facebook login. No creating new user names and passwords, simply connect using Facebook. By doing so, JibJab is able to pull in photos from your existing Facebook galleries for use in creating and personalizing your JibJab project.

Get the Login Button code.

Facebook Comments

BuzzFeed.com
One of the many Facebook features that BuzzFeed has instilled in their site is the commenting system. Once again, you are able to use Facebook credentials to sign in to post a comment. Of course, the comments are then fed back to the user’s Facebook feed, where all their friends are able to see the interaction.

Get the Facebook Comments code.

Get the Activity Feed code.

Get the Live Stream code.