Not long ago, a campaign had a couple of options for getting out word of a big endorsement: a press release to political reporters, or maybe a calculated leak to a big local paper. But Wednesday morning, Sen. Hillary Rodham Clinton's campaign broke the news of Hollywood icon Steven Spielberg's endorsement on a new website the campaign runs, HillaryHub.com. The campaign later e-mailed reporters suggesting they check the site. HillaryHub isn't a typical campaign site. With a simple, three-column look, occasionally edgy headlines and links to a blend of videos, reports from newspapers and blogs and campaign memos, it's a...