all labels and other written, printed, or graphic matter (1) upon any article or any of its containers or wrappers, or (2) accompanying such article.
In Wilson et al. v. Frito-Lay North America, Inc. et al (April 1, 2013), the District Court for the Northern District of California decided that a website referenced on a food label did not "accompany" the food. As the Court explained,
Even though the Named Products' labels ask consumers to visit the website, they do not state that the website will inform consumers of the details of the Named Products' nutritional facts, and none of the language Plaintiffs cite is drawn closely enough to the Named Products themselves to merit the website's being found to constitute "labeling."
This aspect of food law will certainly continue to evolve. In the meantime, this decision may encourage food companies to push the boundaries of how they describe (and market) their goods on the web. Caveat emptor essorque!