Google Feedback for Firefox

Requires Firefox 2.0+

Also for Google Chrome and Internet Explorer

Mark
Highlight or black out parts of the page
Comment
Explain the problem or make a suggestion
Send
With the click of a button, you’re done!

Help improve Google’s products

Sending your feedback is easy using Google Feedback for Firefox. Just click the feedback link, mark up the page, enter a description, and send your feedback straight to Google.

Google Feedback for Firefox screenshot