Article appearing in D-Lib magazine, 2006-Jan.

In order to understand how we can make tags more searchable it is important to understand users and why they submit certain tags. At this time, little is known about the decision-making process behind tag selection, and quantitative data is relatively scarce. One useful approach might be to examine users' motivations when adding tags, see why they decide on particular words, observe how many tags they add and compare how the same items are classified by different users. It might also be helpful to see how feedback affects tag use and how users modify tags in the light of the behaviour of others. However, such studies take time and resources.