For the same reason, YouTube does not strictly limit voting on their videos to one vote per each IP address, although it does keep some other restrictions in place to prevent vote stuffing.
Maka otu ihe kpatara ya, YouTube adịghị agbachitere votu na vidiyo ha na otu votu ọ bụla na adreesị IP ọ bụla, ọ bụ ezie na ọ na-edebe ihe mgbochi ndị ọzọ ebe iji gbochie nkwụsị nri.