What happens when a brand has a beautiful logo, and sticking it in the corner of the main navigation doesn’t do it justice? You make it as big as possible and stick it in the footer, rewarding every browser when they reach the bottom of the page. Some logos take up the whole footer, some fall off the page, but all of them leave a lasting impression.
Not only do many websites now have a giant logo on the bottom of the site, but more and more sites feature large footers of all kinds that demand to be seen. These giant footers allow for important information to be read easily, and can act as secondary forms of navigation.