Delicious ambiguity and tag usage visualization

Along the lines of my previous post about tagging usage in del.icio.us, you might want to take a look at TagWiz. Hyunwoo Park, Satish Polisetti, and Dhawal Mujumbar created this tool to visualize the tags of an individual user in delicious. It provides tag frequency distribution visualization and a metric of how important the long tail effect is.

You can also use the "Ambiguity Evaluation" tool to identify whether some tags are obviously ambiguous. It tries to remove spaces, dashes, dots, and plurals to come up with more consistent tags. Maybe you'll want to try your del.icio.us username and then bobglushko's username. What do you think?