Since version 2.27 of Linchpin Hey, it's possible to search for older posts and comments belonging to posts.
Search results will be displayed as dropdown cards/containers. Clicking on the search result will take you to a single post view of said post or comment.
Functionality
The search uses the Algolia ranking algorithm. We recommend reading this in-depth article if you are interested in understanding how exactly the search works.
It's also a live, "search-as-you-type" search. This means that as soon as you start typing, the search will yield results and update them based on your further input.