One of the best, yet often ignored ways to make website navigation better is tag clouds. The issue with tag clouds is that they have been around for quite some time but webmasters generally aren’t familiar with their history or purpose. You might be surprised to learn that the first appearance of a tag cloud was over two decades ago. That was when the first such cloud was created in Germany in 1992. However, that didn’t get much recognition at the time.
Origen: A Short History of Tag Clouds