Using the widget is simple. Browse to a site you would like to feedback on. Then click on the Doddle icon in the menu bar - if you are not logged in you will either need to login or register at this point.
When you have completed signup (it only takes 30 seconds) you will return to your website where a Doddle circle will appear in the bottom right. Click this and follow the instructions
Once you have added your task, you can login to www.getdoddle.com to view your feedback, and invite your agency or web developer to take a look