LOS ANGELES, Feb. 22, 2011—With more than 500 million active users, marketers know they must have a Facebook presence to keep their brands top of mind with consumers. While many marketers have fully embraced social media and are maximizing their consumer engagement strategies, a new study conducted by advertising agency WONGDOODY shows that there is the opportunity to do more. The WONGDOODY Facebook Global Best Practices Study uncovered a trend that shows a surprising number of top brands do not get the most out of their Facebook....