Advertisements should be explicit. You’ll often see sponsored segments of videos when a YouTuber is talking about a product, where they explicitly say it’s sponsored. These influences are being asked to treat the product preferential to other devices without being a sponsor.
Advertising is one thing. Asking people to advertise your product without revealing that it’s an ad is something else.
If you have reason to believe someone is in mortal danger, your response shouldn’t be to mail a letter giving them 30 days to respond.
You send police to the scene where they secure the potential suspect and make sure there’s nothing going on.