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"Tag Cloud Zen Cart module generates Cloud of Tags, based on Zen Cart product names, Zen Cart category names, most popular(purchased) products, most viewed products, products with most reviews etc. A tag cloud (or weighted list in visual design) can be used as a visual depiction of content tags used on a web site. Often, more frequently used tags are depicted in a larger font or otherwise emphasized, while the displayed order is generally alphabetical. Thus both finding a tag by alphabet and by popularity is possible. Selecting a single tag within a tag cloud will generally lead to a collection of items that are associated with that tag." .....
