▁other ▁websites ▁using ▁web ▁sc rap ing . ▁The ▁content ▁is ▁then ▁mirror ed ▁with ▁the ▁goal ▁of ▁creating ▁re venue , ▁usually ▁through ▁advert ising ▁and ▁sometimes ▁by ▁s elling ▁user ▁data . ▁Sc ra per ▁sites ▁come ▁in ▁various ▁forms . ▁Some ▁provide ▁little , ▁if ▁any ▁material ▁or ▁information , ▁and ▁are ▁intended ▁to ▁obtain ▁user ▁information ▁such ▁as ▁e - mail ▁addresses , ▁to ▁be ▁target ed ▁for ▁sp am ▁e - mail . ▁Price ▁aggreg ation ▁and ▁sho pping ▁sites ▁access ▁multiple ▁list ings ▁of ▁a ▁product ▁and ▁allow ▁a ▁user ▁to ▁rapidly ▁compare ▁the ▁prices . ▁ ▁Ex amples ▁of ▁scra per ▁websites ▁Search ▁engines ▁such ▁as ▁Google ▁could ▁be ▁considered ▁a ▁type ▁of ▁scra per ▁site . ▁Search ▁engines ▁gather ▁content ▁from ▁other ▁websites , ▁save ▁it ▁in ▁their ▁own ▁databases , ▁index ▁it ▁and ▁present ▁the ▁sc rap ed ▁content ▁to ▁their ▁search ▁engine ' s ▁own ▁users . ▁The ▁majority ▁of ▁content ▁sc rap ed ▁by ▁search ▁engines ▁is ▁copy right ed . ▁ ▁The ▁sc rap ing ▁technique ▁has ▁been ▁used ▁on ▁various ▁d ating ▁websites ▁as ▁well ▁and ▁they ▁often ▁combine ▁it ▁with ▁fa cial ▁recognition . ▁ ▁Sc rap ing ▁is ▁also ▁used ▁on ▁general ▁image ▁recognition ▁websites , ▁and ▁websites ▁specifically ▁made ▁to ▁identify ▁images ▁of ▁cro ps ▁with ▁p ests ▁and ▁dise ases ▁ ▁Made ▁for ▁advert ising ▁Some ▁scra per ▁sites ▁are ▁created ▁to ▁make ▁money ▁by ▁using ▁advert ising ▁programs . ▁In ▁such ▁case , ▁they ▁are