I am looking for a Category Cloud plugin that would work with WordPress 2.1. I used to use Zak Greant's excellent "Category Cloud" plugin (http://zak.greant.com/tags/category-cloud), but this doesn't work with WP 2.1 (you get a no categories message above the header).
There is also the "Category Tagging" plugin. It works with 2.1 but the implementation isn't as clean and you don't get the categories colours changing depending on the weight of the category.
I would seriously seriously appreciate it if anyone would be willing to make Zak Greant's Category Cloud plugin WP 2.1 compatible. I've contacted him, with no avail. I think he's stopped supporting the plugin. Shame :(