Is there a power law of category use?

I have been thinking a lot about categories over the last week or so. It started by Thomas sharing the work he has been doing to build a category index page, whose design I love. I started to realise that I like to put a lot of my blog posts in one of few categories: moments of joy go in one category, slices of life go in another, posts about coffee go in another.As a result of all of this thinking about categories, I fixed my category index page, which has been broken for a few months. I added a count of how many posts are in each category so I could see how I use categories. I noticed what I had felt from how I use categories on a day-to-day basis was true in the data: there is a heavy concentration of posts in a few categories, and then a long tail of other categories.I created a chart in Google Sheets to visualise the trend, charting all 63 categories I use at the time of writing this post:ALTA chart showing a power law trend in the use of categories on my website. Almost all of…