Tag Clouds are one of the best methods to promote your website and subsequently very simple to use. Commonly referred to as word links, or tag clouds, they are a simple yet effective way to navigate the Internet. Why use a search engine to type out your search, await the result, and then hope that is meets your needs? Tags allow you to simply click on a tag and go to the site. Essentially coming full circle again, with the hyper link, only these are prettier. A tag can be a link to a video, a profile, a graphic, a website, or an email address - anything that you can think of to link to.
For a quick example, stop by www.megatags.info