I had a good search for this and could not find anything (maybe i’m just crap at searching).
I’m after a plugin that converts your most popular tags into categories.
Obviously most popular tags is already something that gets measured, for tag cloud font sizes.
I’d like to take a customizable percentage of the most popular tags and convert them into categories to be displayed in a list in sidebar. So maybe top 12 tags out of 30 for example, based on number of times tags are used.
I’ve just noticed that WordPress.org uses this functionality in the plugins directory left menu — ‘MOST POPULAR TAGS’. Using this terminology in my search for the plugin I managed to find one that does the job (I think — I haven’t tried it yet):