There's a project to collect data on pop-overs like that, available as an extension for FF[1] and Chrome(s)[2] 1: https://addons.mozilla.org/en-US/firefox/addo

There's a project to collect data on pop-overs like that, available as an extension for FF[1] and Chrome(s)[2] 1: https://addons.mozilla.org/en-US/firefox/addon/in-page-pop-up-reporter/ https://addons.mozilla.org/en-US/firefox/addon/in-page-pop-u... 2: https://chrome.google.com/webstore/detail/in-page-pop-up-reporter/dkpphegmeomaffjanagefmejpeebfcmh https://chrome.google.com/webstore/detail/in-page-pop-up-rep...