Is Filing Your Nails in Public a Do or a Don't?

The other day on the bus, I noticed a lady focusing all (and I mean all) of her attention to her nails. She filed them for what seemed like the entire twenty-minute ride, and I have to admit — it kind of grossed me out as the nail dust floated all around. Last year I asked you what you thought about putting on makeup in public, and most of you thought that a little touchup is OK, but doing a full-blown routine is tacky. What about filing nails? Do you think it's uncouth to groom them in public, or is it acceptable?

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