▁but ▁some ▁I SP s ▁implemented ▁it . ▁The ▁list ▁was ▁supposed ▁to ▁contain ▁only ▁sites ▁with ▁child ▁por n ography , ▁but ▁ended ▁up ▁also ▁blocking , ▁among ▁others , ▁the ▁site ▁la ps ip orno . info ▁that ▁critic ized ▁the ▁move ▁towards ▁c ensor ship ▁and ▁listed ▁sites ▁that ▁were ▁noticed ▁to ▁have ▁been ▁blocked . ▁ ▁Following ▁a ▁“ vol unt ary ▁law ” ▁ ▁en act ed ▁by ▁Finn ish ▁parliament ▁on ▁ 1 ▁January ▁ 2 0 0 7 , ▁most ▁of ▁the ▁Finland ’ s ▁major ▁Internet ▁service ▁prov iders ▁decided ▁on ▁ 2 2 ▁November ▁ 2 0 0 6 ▁to ▁begin ▁filtering ▁child ▁por n ography , ▁and ▁I SP s ▁first ▁started ▁filtering ▁in ▁January ▁ 2 0 0 8 . ▁The ▁Ministry ▁of ▁Communic ations ▁has ▁commented ▁that ▁filtering ▁is ▁volunt ary ▁for ▁I SP s ▁as ▁long ▁as ▁they ▁do ▁not ▁refuse . ▁The ▁black list ▁is ▁provided ▁by ▁Finn ish ▁police ▁and ▁should ▁contain ▁only ▁foreign ▁sites . ▁Techn ically ▁filtering ▁was ▁planned ▁to ▁be ▁URI ▁based , ▁like ▁the ▁United ▁Kingdom ’ s ▁C lean feed , ▁but ▁so ▁far ▁implementations ▁have ▁been ▁DNS ▁based . ▁ ▁A ▁majority ▁of ▁these ▁cens ored ▁Internet ▁sites , ▁however , ▁do ▁not ▁actually ▁seem ▁to ▁be ▁cens ored ▁by ▁the ▁Finn ish ▁I SP s ▁due ▁to ▁actual ▁child ▁por n ography , ▁but ▁due ▁to ▁“ normal ” ▁adult ▁por n ography ▁instead . ▁Most ▁of ▁the ▁known ▁sites ▁are