The chrome browser can measure user satisfaction in many ways. Here are some examples:
-- Visitor slowly scrolls down the page at a typical reading speed.
-- Visitor bookmarks a page as a favorite.
-- Visitor saves a copy of the page to disk.
-- Visitor prints out a copy of the page.
-- Visitor clicks an external exit link near the bottom of the page.
-- Visitor returns to the page later.
-- Visitor explores other pages on the same site.