Niche communities refer to social networks focused on a specific interest or topic that allow people with common interests to connect. They tend to be smaller than general social networks but have a narrow focus, leading to successful social marketing. Examples include cooking communities for mothers, health and fitness communities, communities for "boomers", and dog owner communities. The benefits of niche communities include targeted advertising, valid and relevant information, social connections among similar groups, targeted word-of-mouth potential, understanding discussion topics, and learning what consumers want.