I learnt about Google Ad Planner while browsing the web yesterday. Here's how you can use Google Ad Planner to determine the traffic of any website: 1. Click on the "Begin Research" tab in your Ad Planner dashboard. (www.google.com/adplanner) 2. Then, type the URLs of the websites that you want to research in the "Sites Visited" section of "Online Activity" 3. You'll notice that all those websites now appear on the right side. Click the website to view the traffic and demographic details of that site.