Easy w/ @letsencrypt
For CT this is actually an easily avoidable problem: they could have used a merklized k:v index.
Free media like photos, music, etc. that's likely to get Incorporated into other works (not a novel problem!),
Scientific observations (e.g. inject encoded noise into a radio astronomy telescope),
Public safety related radio (e.g. encoded noise on airline frequencies)
Or if you're Jewish, the weather - according to council member Trayon White. :/