The algorithm is not a geography. Treat it as a blender.

If you cannot geofence a channel, do not put the offer in it.

Channel by channel

A smaller channel you control is worth more than a large one you cannot stop.

Site: Geo and notices help; they are not magic. Still the easiest to version.
Owned email: You chose the list. Keep product lists and offering lists apart.
X / public social: Default blender. Offering language rarely belongs here without a path that allows public solicitation.
Discord / Telegram: Jurisdictions mixed, logs poor, mods unofficial speakers. Scripts or silence.
Creators: Their audience is not your lock. Contract the lock. Takedown or do not hire.
Conferences: A room is a market. Badges and recordings travel. Brief the founder as if the clip will be the offer.

Northline’s professional lock meant some channels stayed empty. Empty is a control. Growth leads hate empty. Empty is how you remain describable.

Planning a regulated ICO? Same screen as everyone.