I see many photographers at wedding receptions, etc, pointing the flash on their cameras straight to ceiling, or even slanting over the photographer's head.
At first I thought it was to bounce the flash from the ceiling. But today I saw a photographer in a church shooting a christening. Again the flash was pointed to the ceiling. The church has a very high ceiling and had chandeliers hanging, so it's not to bounce the flash from the ceiling.
There was no card on the flash to bounce the light either. Why is the benefit of doing this?