I will make the extension honor that privacy setting. Be aware though that the extension is not a public ssb viewer, it is more close to patchlite running in your machine. The protocol will load a message if it is in your feed but the rendered message is not accessible outside of your browser, it is like a self-contained ssb viewer.

Also, even though you said you didn't had a problem with it, sorry for using that message. It was on top of my patchwork when I needed an ID to test and I do love that book. I will be more careful next time, even if it didn't worried you.