The tag cloud on the left side of this page displays tags assigned to articles. The size of each tag is determined on the number of articles to which this tag is assigned.
I was interested how this tag cloud looks like when the size is determined by the popularity of articles tagged with a certain tag among readers of isquared.nl.
To visualize this I have hacked together a quick application, called TagPop, to display the tags based on popularity, this is available here.
In a later post I will write more about the inner workings of TagPop.