There is a rumor that Facebook will start charging you for using the service soon. according also to the rumor its because of the recent facebook changes and the upcoming arrival of FACEBOOK TIMELINE.
here's the answer to that: No, Facebook will not make you pay. Its Free and Always will be. You can even read that on the homepage of facebook.
will you use facebook if its no longer free? No, right? will the 800 million facebook users like it? No. Will mark zuckerberg like it? No.
Facebook is already making Billions so i think and i know you would agree that facebook dont need to charge its users anymore.