If you are logged into Facebook while you are surfing around the web, you can see what types of articles that your friends like. Fblike.com is a website that contains widgets of specific websites. In these widgets, you will see what types of articles or content within the websites that your friends like.
Its a simple, yet clever idea. I can see what articles my friend like on Yahoo! Sports, Ted Talks, CNN, People.com, CollegeHumor, YouTube, etc.