Cac quang cao tren mang “bat
bai” ban, dieu nay co the anh huong it nhieu den quyen rieng tu.
Quang cao truc tuyen khong chi no ro, du loai, du kieu, nao la dang cuon, dang
nhay, rung, am thanh hoac ca kieu bai hat... nhung quang cao truc tuyen con theo
doi ban ngay ca khi ban dang xem chung, chung ghi nhan tung cu nhan chuot de tao
ra cac profile chi tiet hon la dua tren cookie trinh duyet nhu truoc.
Cac mang tiep thi dua tren cach luot web cua nguoi dung nhu la BlueLithium,
Revenue Science va Tacoda hien thi quang cao dua tren thoi quen luot web. Theo
cong ty nghien cuu thi truong eMarketer, chi phi cho quang cao dua tren ngu canh
dang nay se tang tu 1,5 ti USD trong nam 2007 len den 2 ti USD nam ke tiep.
eMarketer con du doan quang cao video chiem den hon 1/3 chi phi.
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Ban co the giu sach se mot phan
nao do cookie bang cach bo di cac dich vu quang cao tai trang web cua
Network Advertising Initiative. |
Cac mang quang cao cho biet doi voi cac nha quang cao, quang cao theo ngu canh
hieu qua hon va doi voi nguoi dung, quang cao dang nay thuong it xam pham hon so
voi quang cao dang popup hay phan mem quang cao. Nhung du gi thi quang cao ngu
canh cung dang lo ve tinh rieng tu.
Den bat cu trang web nao trong nhom hon 1000 trang web cua mang quang cao
BlueLithium, PC cua ban se chua mot cookie ghi lai tung cu nhan chuot, cac trang
ma ban den va lieu ban co mua mot mon hang nao khong. Sau do, mang nay se dua ra
quang cao dua tren moi quan tam cua ban: nhu ban tim dien thoai di dong o trang
web nao do, roi ban se thay nhung quang cao ve thiet bi cam tay o mot trang khac
khong co lien quan gi, trong khi nguoi khac quan tam den mon hang khac se thay
quang cao khac. BlueLithium tu choi neu ten khach hang nhung cho biet nhom do
gom 70 trong 100 trang web pho bien nhat.
Cac cookie dom ngo
Thang 11 nam ngoai, 2 to chuc Digital Democracy va Public Interest Research
Group cua My de don len FTC (Federal Trade Commission) to cao nhung ky thuat
dung cho quang cao theo ngu canh la khong cong bang va do la chien thuat tiep
thi lua bip. Theo mot chuyen gia, quang cao ngu canh la khong co gi sai trai
nhung nha quang cao can cho khach hang biet chinh xac la ho dang lam gi va phai
duoc phep cua nguoi dung.
Ngay khi to don nay duoc nop len FTC, Tacoda noi rang cong ty se cho khach hang
biet cookie duoc theo doi nhu the nao va cong ty se thiet lap cookie het han sau
1 nam.
Trang Tacoda dua ra 1 lien ket den trang Advertising Initiative (find.pcworld.com/56088),
o day ban co the tat cookie theo doi tu Tacoda, Revenue Science va 5 mang quang
cao truc tuyen khac. Revenue Science cho biet cong ty lay du lieu luot web cua
nguoi dung khong the suy ra thong tin nguoi dung tu nhung cu nhan chuot do duoc.
Con BlueLithium cho rang lien ket mot nguoi dung voi qua trinh luot web se de
cho cac cong ty dua ra thong tin cho ca 2 phia. Khi xu huong cac trang web tiep
tuc thong nhat va hop lai thanh trang web lon thi nguoi dung lai so lan ranh
mong manh giua nhung cu nhan chuot vo danh va du lieu thong tin nguoi dung co
the bi dut.
Vay co rui ro khong? Mot khi ton tai du lieu thi nguoi ta thuong mo den cach su
dung chung. Can trong va lua chon hieu qua la con duong ban nen di.
Theo PC World VN
Article source http://w4rum.com/669.t
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