Taxonomies have been around in WordPress for a long time as a way of grouping things together, but did you know there is a lot you can do with taxonomies which you may not know? In this talk I will outline what taxonomies are and how you can create your own custom taxonomies. I will share some use cases for having custom taxonomies as well as some different and interesting ways in which I have used taxonomies on some sites in the past. In addition I will looks at some of the ways in which you can optimise the admin UI for taxonomies, making it more appropriate in some cases. The talk will also look at how you can associate data with different taxonomy terms.