Share of Search is a Chrome add-on designed to help users predict market share changes based on search volume data for individual brands. This tool utilizes research by Les Binet, which indicates that Share of Search can effectively forecast Share of Market. By entering a brand name into Google, users can instantly access the last month's year-over-year change in Share of Search, streamlining the analysis process.

The application is free to use and significantly reduces the time spent on brand performance analysis, saving approximately 45 minutes for each use, depending on the number of competitors being evaluated. With its focus on monthly calculations and year-over-year comparisons, Share of Search provides valuable insights for marketers and brand managers looking to enhance their strategic decision-making.