I can take it or leave it in other words if someone remembers to put it on the table I might use it.i too have always been taught that it goes in the bowl upon serving, though i've never heard on the rice specifically. bayou, do you like file on your gumbo?? it was always in my family's kitchen, but it never got used. by the time i was old enough to care i was too set in my ways and didn't care for it.
Funny story, I went to a friend's house to eat duck gumbo. They had a shaker on the table that looked like file and I shook a good portion onto my rice (read the label stupid). I noticed my hosts looking strangely at each other but they said nothing. I ladled some duck gumbo into my bowl and took a bite. The powder was powdered jalapeno and it lit me up. Not wanting to look too foolish I ate most of my bowl and got another which I omitted the powder. We had a good laugh later.