If you use Piggydb in private mode (Anonymous Access is off) and want to show some of your knowledge fragments to others without login, you can do this with #public tag. A fragment tagged with #public can be accessed via Document View (/document-view.htm?id=<n>) without login.

A fragment that is tagged with both #public and #home is called "Public Home" and it can be accessed at http://<your-piggydb-root>/public/. It is a good entry point for #public fragments.