since the like button is a little piece of facebook embedded on another website the browser is sending info about the request to load facebook content on that page. we record some of this info to help show you a personalized experience on that site and to improve our products.
this service tracks you on other websites.
tlrdr quote information that is not on the page let alone in the quote text. title is too generic, should contain something like "This service tracks you on other websites where their widget has been included"
This service tracks you on other websites
{'facebook.com'}