If you use Chrome, you know how tedious it is to search for a URL, especially the most frequent ones. For day-to-day use, it's tedious to open the bookmarking site and search for a URL, especially the most frequent ones. 

In fact, Grant Winney — the extension's developer — created this extension so he could generate bookmarks for the sites that he frequent the most using the tags from the Pinboard bookmark service.

When you first open the extension, you'll need to provide your Pinboard API token. After that, you can select the tags for which you want to generate bookmarks.

Then, click the "Generate Bookmarks" button. It'll look for bookmarks matching your selected tags and add them to your Bookmarks Bar.