The document provides 13 techniques for writing effective pay-per-click (PPC) ad copy that improves click-through rates and lowers costs. It explains that well-written ads differentiate the advertiser, incentivize clicks, create urgency, use keywords and benefits, add calls to action, leverage brands, pre-qualify visitors, employ psychology and seasonality, develop multiple ads for testing, and consider dynamic keyword insertion. The overarching message is that testing different ad copy techniques can significantly boost ad performance.