On: Google exposes security cameras

[gojomo]

Another possibility: if the page had outlinks, the URL could appear in public referrer logs elsewhere. (Pages like intranet login-only wikis often reveal their internal URL structure to outside sites that way.)

[jacquesm → gojomo]

That's a good one! Thank you, I had not thought of that possibility. Then if that other site logs its statistics publically that would do it.