Slide's Top Friends back on Facebook after third-party privacy audit

Facebook's third-most popular widget, Slide's Top Friends, is back after Facebook suspended it on June 26. (The offense: displaying Top Friends' users birthdays and other private information that wouldn't normally be visible on Facebook.) What took so long? Following the suspension, Slide wanted to call its apps the most secure on Facebook. To feel comfortable doing so, it contracted a third-party audit firm to review its applications and source code, Slide exec Keith Rabois told us. "The issue with Top Friends was fixed immediately," Rabois told us, "But as you might imagine an independent audit takes time to perform." Elsewhere on Facebook, Slide's privacy troubles seem to be spreading.

Slide rival Rock You's Super Wall saw traffic plummet 70 percent in the last week. InsideFacebook's Justin Smith speculates the dip is due to "some kind of punitive action against the application" over privacy concerns by Facebook, "perhaps by restricting feed access or by lowering the application’s notification or invitation limits." Another source tells us Flixster, the widgetmaker behind the Movies app, is going through similar punishment from Facebook over privacy concerns.