Stories about Facebook have been plentiful in recent weeks as the company apparently prepares to announce that it has 500 million members and the trailer for The Social Network has hit the web.

Wired suggests “Five things that could topple Facebook’s empire.” One interesting tidbit out of this article: the American Customer Satisfaction Index (from the business school at the University of Michigan) found that Facebook has ratings similar to cable companies and airlines. Also, Facebook is similarly rated to MySpace. Overall, “That puts the world’s most visited website in the bottom 5 percent of private sector companies in the survey.”