The information gathered such as the number site visitors, the source in which they've originate from, and also the pages visted in an nameless kind. B?n có th? ngh? v? b? c?c nh? m?t lo?i ph??ng ti?n tr?ng có th? ???c s?a ??i cho phù h?p v?i b?t k? m?c ?ích n&agra