Women make most purchasing decisions but feel misunderstood by advertisers. While women dominate social media usage and online shopping, 91% feel advertisers don't understand them. To communicate effectively with women online, advertisers must market directly to women, understand differences between men and women, avoid stereotyping women by age, and focus on messages that are entertaining, useful, and honest rather than patronizing. Women spread product information more than men through their extensive social networks, so engaging with them online is important.