This year, I have implemented a custom taxonomy API (categories, tags, etc.) in Connections. Tag support is built-in now. It is, however, still commented out in the code (disabled).
If you wish, you can uncomment the code in the ../wp-content/plugins/connections/includes/Taxonomy/Register.php file:
There is still minor work around the user experience when adding/editing tags when managing a directory entry.
I suggest repurposing the “Notes” field to a “tags field for searching. Enter the “tags” that you want the entry to return as a result for into the field and configure the template not to display the notes.
I hope this helps!
