Tus neeg siv khoom tshaj tawm cov ntawv tshaj tawm them nyiaj txhawb nqa cov lus ceeb toom ceev hauv kev tshaj tawm ... qhov kev hu xov tooj tau xa mus rau lub chaw hu xov tooj uas tsis muab cov lus tsocai. Oops. Lwm tus neeg siv hloov cov ntsiab lus nquag vim lawv tsis tau txais kev hloov pauv. Oops… daim ntawv yuav khoom xa mus rau nplooj ntawv tsis pom. Tseem muaj lwm tus neeg siv khoom suav nrog CAPTCHA ntawm daim ntawv tsim qauv… uas yeej tsis tau tiag tiag…