I feel like Sally Field….”You like me! You like me! You really like me!”

Here’s what Facebook has to say about it:
Why did “Become a Fan” change to “Like”?
To improve your experience and promote consistency across the site, we’ve changed the language for Pages from “Fan” to “Like.” We believe this change offers you a more light-weight and standard way to connect with people, things and topics in which you are interested.

What does it mean to “Like” a Page?
When you click “Like” on a Page, you are making a connection to that Page. The Page will be displayed in your profile, and in turn, you will be displayed on the Page as a person who likes that Page. The Page will also be able to post content into your News Feed.

Is there a difference between “Liking” an item a friend posts and “Liking” a Page?
Yes. Liking a Page means you are connecting to that Page. When you connect to a Page, it will appear in your profile and you will appear on the Page as a person who likes that Page. The Page will also be able to post content into your News Feed. On the other hand, when you click “Like” on a piece of content that a friend posts, you are simply letting your friend know that you like it without leaving a comment.