Facebook's Mark Zuckerberg may be getting all the money and media attention lately, but News Corp.'s MySpace still dominates when it comes to traffic. The site commands more than 70 percent of visits to social networks, according to this latest chart from Hitwise. Still, its share declined 8 percent in the last year. Which might explain why News Corp. chairman Rupert Murdoch was rumored to be poking around runner-up social network Bebo recently. Oh, and by the looks of things, maybe Barry Diller should have acquired MyYearbook for IAC back when he reportedly expressed interest.