quote:

Your "cache" is all the files your computer has downloaded from the websites you visit. This does not mean actual "downloads." Have you noticed that after you visit a page once, it loads much faster the second time? This is because your computer has already "downloaded" information and images from that website. Sometimes, however, we want the computer to download new information and images, rather than load what it already has. So, we delete the files it has already downloaded, forcing it to download the new files. This is typically a very simple process.

Please note, "Cookies" and the "Cache" are two different things. Your "Cache" is the information you store about a website, while "Cookies" are the information website stores about you. For example, when a website saves your username and password, it uses a cookie. This does not effect your cache.