[wickedsight]

On festival sites and other crowded events, cellular sometimes gets quite saturated and slow. This might be a good alternative.

Also, I could see it as a useful tool in emergency situations. But a lot of people would need to use it to be actually useful.

[master-lincoln]

When I last had a university workshop where 20 people in a room worked on a bluetooth protocol I also noticed bluetooth is quickly saturated with many participants. Hopefully that changed in the last 15 years since...