What's the difference between "public" and "private" galleries?

On the settings page for each gallery, you can choose whether it is a "public" or "private" gallery. Both public and private galleries can have passwords, if you wish.
 

There are four levels of privacy settings for your galleries:
 

1.  Public:  These galleries are shown on your Gallery Homepage, and anyone can enter the gallery without a password.

2.  Public with a Password:  These galleries will show as thumbnails on your Gallery Homepage, so the event cover photo and the name of the event will be viewable by anyone, but a password is required to enter the full gallery.

3.  Private:  These galleries do not show up on your Gallery Homepage.  The client will need the exact event URL to access the gallery.

4.  Private with a Password:   These galleries do not show up on your Gallery Homepage.  The client will need the exact event URL and password to access their gallery.