Apparently some people are fascinated by the fact that you can get your feet dirty by walking around barefoot inside a Wal-Mart store. I do know they clean the floors at Wal-Mart on a nightly basis because I happen to know someone whose job that actually is. Is Wal-Mart a more likely place to get your feet dirty than other locales? Maybe it is, but if so only due to its popularity (more foot traffic down its aisles) leading to dirtier floors. If the floors are washed at night when the store is empty (or nearly so) then by the time most shoppers arrive later in the day the dirt has probably already been laid down by many dirty shoes. Thus, dirty feet if you dare to walk barefoot.