PRETEND for a moment that you are Google’s search engine. Someone types the word “dresses” and hits enter. What will be the very first result? There are, of course, a lot of possibilities. Macy’s comes to mind. Maybe a specialty chain, like J. Crew or the Gap. Perhaps a Wikipedia entry on the history of hemlines. O.K., how about the word “bedding”? Bed Bath & Beyond seems a candidate. Or Wal…