I added a tag cloud to this BLOG. It looks quite nice, and I was happy with the tags except when I saw that that they didn't accurately reflect my content.
When I first deployed this change, the biggest tag was for "drupal", but when you clicked on that tag, you saw only one story. And conversely, the "c++" tag is smaller than the "drupal" tag, but there are three "c++" stories. Why was the "drupal" tag so large? And why was the "c++" tag so small?