Thank you. I'd like to think that maybe I know more than I think I do but I actually researched forum posts for info about the sitemaps.
And did you just give me a homework assignment. More research to do. It just never ends. LOL
1. I do have images set to Protected View. I've had trouble in the past with sites hotlinking images.
I thought that hotlinking could not be prevented in Unprotected View in Zenphoto Image options. Could I prevent hotlinking of Zenphoto Gallery by using the htaccess in my roots htdocs?
2. Robots - Zenphoto 1.4.6 is my first ever install so I don't think there would be anything from an older version. I found a robots.txt file in the /htdocs/gallery and it is empty. I looked in zp-core and found example_robots.
Should the the Zenphoto robots.txt be empty?
3. I'll save the modrewrite question for tomorrow.
I can see the sitemap does a good job of indexing Zenphoto and some images are starting to show up in Google today.
thank you