This month, Facebook launched it’s new “Like” button, easily allowing users to make connections to pages and share the content with their friends with a single click of a button. Facebook’s new social plugins are designed to create a more personalized web browsing experience by allowing users to interact with other websites (for example, “Liking” them) without even logging in.

There have been mixed feeling about the announcement, from smacking of a “Big Brother” experience on the web to feeling that it’s fun to share your thoughts with friends (who can resist clicking a Like button when you actually read something you like?)

If a website represents profiles of real-world things, you can enable the Open Graph protocol – to integrate your web pages into a social graph (showing a tally of people who “liked” the page). What makes everyone uneasy/excited (depending on how you look at things) is the ability to use this information to serve customized web experiences via targeted advertising.

Say, for instance, you “Like” several sites for Pet Supplies. Websites can then display the most relevant content to any user based on their friends and likes. All of which means more traffic and revenue for publishers, and more Pet Banner ads or articles for you.

More than 50,000 websites have integrated Facebook’s new social plugins in just one week. Like it or not – Facebook is everywhere! What are your thoughts?