That $500 million Google set aside for the DoJ? Relates to AdWords revenue from illicit 'net pharmacies

Remember that odd disclosure on a Google 10-Q form this week of $500 million (more than 20% of their bottom line) set aside for a possible settlement with the Department of Justice? The Wall Street Journal reports that Google "is close to settling a U.S. criminal investigation into allegations it made hundreds of millions of dollars by accepting ads from online pharmacies that break U.S. laws."