There could be a monthly fee in the distant future, but I really doubt it. First, Sony not charging for online play is a huge advantage over Xbox Live\'s plan. They will get more casual gamers if they keep it free. Second, if Sony did start charging, they would have to set up a big network like Xbox Live so they don\'t look inferior to it (and in turn, lose users). This would cost them more money than I think it\'s worth.