Beer advertising is a topic that has frequently attracted the attention of industrial organization economists. This update reviews major events, data trends, and research for each of three issues: (1) the importance of advertising and product differentiation for structural change in the brewing industry; (2) the manner and extent to which brewers can strategically alter market shares using advertising; and (3) the social costs of beer advertising and marketing, including advertising bans, targeting of underage youth, and recent changes in the three-tier system of alcohol distribution. Major legal decisions pertaining to commercial speech and other regulations also are discussed.