Add static optimization to README FAQ

README.md

@@ -204,12 +204,15 @@ Vercel Postgres can be switched to another Postgres-compatible, pooling provider
 
 FAQ
 -
-#### Why are my thumbnails square?
-> Absent configuration, the default grid aspect ratio is `1`. It can be set to any number (for instance `1.5` for 3:2 images) via `NEXT_PUBLIC_GRID_ASPECT_RATIO` or ignored entirely by setting to `0`.
-
 #### Why don't my photo changes show up immediately?
 > This template statically optimizes core views such as `/` and `/grid` to minimize visitor load times. Consequently, when photos are added, edited, or removed, it might take several minutes for those changes to propagate. If it seems like a change is not taking effect, try navigating to `/admin/configuration` and clicking "Clear Cache."
 
+#### Why don’t my OG images load when I share a link to a photo?
+> Many services such as iMessage, Slack, and X, require near-instant responses when unfurling link-based content. In order to guarantee sufficient responsiveness, consider rendering pages and image assets ahead of time by enabling static optimization by setting `NEXT_PUBLIC_STATICALLY_OPTIMIZE_PAGES` and `NEXT_PUBLIC_STATICALLY_OPTIMIZE_OG_IMAGES` to `1`. Keep in mind that this will increase platform usage.
+
+#### Why are my thumbnails square?
+> Absent configuration, the default grid aspect ratio is `1`. It can be set to any number (for instance `1.5` for 3:2 images) via `NEXT_PUBLIC_GRID_ASPECT_RATIO` or ignored entirely by setting to `0`.
+
 #### My images/content have fallen out of sync with my database and/or my production site no longer matches local development. What do I do?
 > Navigate to `/admin/configuration` and click "Clear Cache."