Billboard have put up a review on Britney's ongoing comeback tour, The Circus. Their review is based on the yesterday's show in Long Island, New York at the Nassau Coliseum. It's a pretty positive review, even joking on her infamous pre-recorded vocals and how the likes of Beyonce and Ashlee Simpson wouldn't dare do that. From the LQ videos I've seen on YouTube, the tour looks like a triumph. Comeback completed.