That's a significant gain for Facebook, who just squeaked into the Top 10 the month before. While YouTube is still way out in front of both sites, execs at Hulu might want to take notice of the sheer viral power of the Facebook network to socialize video in ways that Hulu, with its spartan social features by comparison, simply can't as easily leverage on its own (in fact, it seems they have noticed).
The picture for online video overall seems somewhat plateaued, with a Nielson reported 11.2 billion total stream in October -- which is only enough to match the numbers from the hot summer video season this past July. Still, total views are up slightly from September's 11 billion, although uniques have fallen very modestly to 138.6 million from 139.3 million the previous month.
What do you think: will Facebook's inherent virality be enough to propel it past the premium content from major networks aggregated by Hulu? Do you find yourself watching and/or sharing more videos on Facebook?