See Who Got Satisfaction From Your Site With New Google Consumer Survey
Conversion paths, exits and other analytic metrics can be studied to determine if users were satisfied. Or, you could just ask them. Today, Google has released a tool that allows webmasters to query users directly — with one line of code required.
The survey will display in the lower right hand side of your site, on all pages that include the snippet. The website satisfaction survey displays a 4 question format that displays in a very clean interface. The surveys run until they achieve 500 responses and can be re-enabled after 30 days.
The standard Google questions are free to use, but if webmasters want customized questions, they’ll have to pay. Customized questions will cost $0.01 per response (or $5.00 for 500 responses. Each survey will feature detailed reporting: