In FB..there is a web browser build in..when you any link on it..it will come out the page you want to see..

Even if you put in the comment section..a link will come out..

The trick is..type in any comments.. www.google.com..click on it..and it will take you to google search..search or browse anything you want..

You can surf..browser..watch streaming video..but cannot download..

It will consume the FB quota..that is unlimited..

Save the link by touch the three dots on the rights of the browser..