<i>Last June, Emily Agin, the company’s director of real estate and workplace services, sent a note to San Francisco-based employees to cut out crude behavior, lest the company lose access to the building’s stairwells.<p>The email, reviewed by The Wall Street Journal, read in part:<p>“It has been brought to our attention by building management and Security that the stairwells are being used inappropriately....Cigarettes, plastic cups filled with beer, and several used condoms were found in the stairwell. Yes, you read that right. Do not use the stairwells to smoke, drink, eat, or have sex. Please respect building and company policy and use common sense...”</i>