Have you seen something like this on a website and wondered why the font size was different?

The font size reflects the importance (or population size in this example) of the various tags. 

Web Design today differs to the earlier, somewhat static sites. Web site development since Web 2.0 (circa 2004) uses additional functionality to increase the interaction with the user, thereby enhancing the user experience. Such interaction, at it’s simplest may take the form of a search facility, right across the spectrum to allowing RSS feeds from blogs as they are updated. Information  is now often given a number of labels or keywords in order to increase the searchability, for example of a document or a blog post ie. the data is indexed. This is known as tagging. Your photo can even be tagged on Facebook!

To take tagging a stage further, the image above is referred to as a Tag Cloud. A Tag Cloud is just a visual representation of content, generated by how the information has been tagged.

So, how is this useful for you?

For example, this post has 4 tags, which you can see below. Tagging makes it easier for users to find what they want on your site. And that makes them happy. Happy users come back and stay longer.

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