In recent web clinics, you've learned how to optimize aspects of your site ranging from landing pages to affiliate marketing. In our October 14 web clinic, we took a step back from optimization tactics to focus on maximizing ROI through smarter testing. To address your toughest testing challenges, senior researchers Boris Grinkot and Ana Gaby Diaz explored how to overcome four common obstacles. Before you develop your next testing plan, read the clinic summary (PDF) or view the full presentation video to learn how to improve your tests, results, and ROI.