There have been numerous rumors over the past few years about Facebook charging for their site. None of them have been true so far and none of them will be true. Yes, Facebook could theoretically charge for specific features, but the $4.99 a month fee that some groups are claiming are flat out inaccurate. The largest group which grew to over 100,000 users was quickly removed by Facebook, however new versions of the group are beginning to sprout up.
Yesterday I received multiple inquiries from people, including journalists, about whether the rumors of Facebook charging a fee were true.