The document discusses measuring the impact of offline advertising on online search volume. It presents findings from analyzing brand search trends after TV and radio campaigns. The key findings are that offline ads can significantly increase search volumes, with TV ads showing a 41% average boost and radio ads a 33% boost. It also identifies three main factors for an effective ad boost: 1) give people a reason to search online with a clear call to action, 2) emphasize the website URL, and 3) keep ad messages short to maintain focus. The document suggests analyzing your own brand's ad boost data and modeling campaign effects, and ensuring your website and search ads are optimized to capture online interest generated offline.