Behavioral targeting is a technique used by advertisers to customize ads for web users based on their browsing history. Companies collect information like time spent on websites, links and ads clicked, and search terms to target ads. Supporters argue it provides more relevant ads and supports free content, while critics say it can narrowly target consumers and collect excessive personal data. As behavioral targeting uses more complex data over time, questions remain whether it fully captures individuals rather than surface-level information. The future of ads may refine targeting but could narrow choices rather than expose users to new options. Consumers should be aware of how their data is used by free websites and advertising.