As the company faces the fallout of alleged bribery in Mexico, it can take comfort in the friendly confines of its Facebook page. The retail giant has over 15 million fans on the social network. Getting even a fraction of those consumers to pay attention on any given day means a healthy audience. Promotions routinely receive thousands of "Likes," while a recent Easter fill-in-the-blank question inspired over 11,000 comments. But the company isn't just good because it has a large following. Its corporate page strikes the right balance of product announcements and fan interaction, much of it pegged to holidays such as "National Puppy Day."