Welcome to Facebook everyone

Like anything, anywhere
Look for Facebook Like buttons across the web to connect with the things you care about and share them with your friends. Control who can see this information.
The Like button
When you click the Like button, a link to that page is added to your Facebook profile and a story is shared with your friends.
Updates
That page can also keep you updated through your News Feed.
Your friends
Find out what your friends have liked, shared and commented on through the Activity Feed and Recommendations social plugins. These new plugins offer you the same control over what you can see and share as you already have on Facebook. More details can be found on the Facebook Blog.
Social plugins offer you the same control over what you can see and share as you already have on Facebook. All social plugins are extensions of Facebook and are specifically designed so none of your details are shared with sites on which they appear. More details can be found in our Help Center.