Add a `z=N` param to the URL when doing a search from the search box, or when clicking a link in the tag list. This is to gather data on how often the links in the tag list are used, and whether it's more common to click tags in the tag list or to perform searches manually. This is temporary and will be removed when enough data is collected.
Components
Components are used to encapsulate common UI widgets used throughout the site. This includes things like comments, tag lists, post thumbnails, paginators, and other things used repeatedly throughout the site. Components encapsulate a widget's HTML, CSS, and Javascript together so that all the code for a component is in a single place.
This uses the ViewComponent library.
Components are similar in concept to React components.