Swearing. Find a regularly controversial CD at Wal-Mart and look at the price tag. Typically, you will see a black bar stamped on the price tag with the white letters "EDITED." They usually only sell the edited version. I e-mailed them about this and they said it was just company policy to protect consumers by editing questionable content on CDs. When I argued that they don't do this in other media and even sell sex-laden Harlequin romance novels, he never responded.