The 2009 Social Ecommerce Planning Guide provides retailers with a structured approach to implement social shopping features aimed at improving key metrics such as traffic, conversion, and order size. It outlines a three-step process: determining key metrics, reviewing and ranking shopping features based on adoption rates, and selecting the most impactful features for the business. The guide includes baseline, strategic, and visionary options for enhancing consumer engagement and driving sales through social ecommerce strategies.