Came here to say just this! It's even better when you actually might want to click on something on the footer.
E.g. in Germany the impressum (often also called "imprint" in English versions of German websites; a mandatory page listing the physical address, contact information, registration numbers and other legal information, typically linked in the footer) must be easy to find and accessible with no more than two clicks (though this seems to be more of a heuristic than a strict legal definition).