the survey also asked whether the 100 sites used“profile-bas

profile-based就是指“基于个人资料的”
【整句话翻译】
The survey also asked whether the 100 sites used“profile-based”advertising,and whether the sites incorporate “cookies”technology,which gives websites basic information on visitors.
该调查还询问了这100家网站是否使用了“基于个人资料的”广告,网站是否使用了“cookies”技术,这项技术为网站提供浏览者的基本信息.