On one thing, the experts seem to agree. The differences between hillaryclinton.com and barackobama.com can be summed up this way: Barack Obama is a Mac, and Hillary Clinton is a PC.
That is, Mr. Obama's site is more harmonious, with plenty of white space and a soft blue palette. Its task bar is reminiscent of the one used at Apple's iTunes site. It signals in myriad ways that it was designed with a younger, more tech-savvy audience in mind â€" using branding techniques similar to the ones that have made the iPod so popular.
"With Obama's site, all the features and elements are seamlessly integrated, just like the experience of using a program on a Macintosh computer," said Alice Twemlow, chairwoman of the M.F.A. program in design criticism at the School of Visual Arts (who is a Mac user).
But Emily Chang, the cofounder of Ideacodes, a Web designing and consulting firm, detected consistent messages, and summed them up: "His site is more youthful and hers more regal."
