> > Oh man, you right side up people are just WRONG! (Sorry... feeling argumentative today)
>
> No, no, no. Any shelf eventually accumulates dust, no matter how frequently and thoroughly you clean. And if dust gets on a glass, it's much better that it gets on the bottom of a glass than the lip of a glass, right?
>
> -- Trip

Don't you whip a glass before you use it? And wouldn't dust be setteling on the top of the glass while it is also setteling on the shelf?

Speed'achooo!'ball