So who's gaining in the online video war? Not Microsoft (NSDQ: MSFT), not Yahoo (NSDQ: YHOO) and not MySpace parent Fox Interactive Media (NYSE: NWS). Their traffic fell by 12 percent, 12 percent and a whopping 32 respectively in the UK from January 2008 to 2009, according to comScore (NSDQ: SCOR) Video Metrix. That's while Facebook saw 140 percent more traffic, BBC 18 percent and YouTube 17 perce