Page Six thinks it has figured out why Bill Clinton gave such a tepid endorsement of Barack Obama on The View and David Letterman last week. Not that anyone was really scratching their heads, befuddled, as to why the ex-president couldn't get past his wife's bitter loss of the Democratic primary to Obama. But Page Six gets specific: Obama supposedly refused to promise Hillary Clinton a Supreme Court nomination as she demanded, so Bill exacted revenge. Clinton on the high court is not exactly a new idea. And her people deny the new version of the rumor. The timing of the gossip is interesting, though. As the Obama ticket battles it out with Sarah Palin, star of Thursday primetime TV, for former Clinton supporters, painting Hillary as shrill and demanding makes Obama look a bit more sympathetic. And celebrity gossip sheets may be nearly as good a way to reach Hillary Democrats as The View.