Social bookmarking sites provide a way to organize, collate and categorize the web using a classification structure called “tags.” Tags are nothing more than keywords that are applied to your bookmarked resource. Tagging is a user-generated form of categorization that allows people to use whatever vocabulary is helpful to them. Many have pointed out that this results in the same resources being filed under different tags, which could create chaos on the social bookmarking sites. Like it or not, the web has slowly but surely adapted and this is the standard way of storing valuable resources online. [...]