In March 2010, we launched Search Funnels, a tool that helps advertisers understand the series of search impressions and search clicks that result in conversions. Since then, we've been tweaking the user interface to make it more useful and usable. We're launching our interface refresh today and want to familiarize you with the new interface so you can migrate smoothly. For the next few weeks you'll also be able to access the previous version (see the left navigation bar under the report list), but we hope you'll take advantage of the improvements in the new version. Here's a sampling of…

