Gadzira shanduro yakaoma yemutsara uyu Imwe nzira yakatwasuka yekuyera i " 'Web Impact Factor "'(WIF) yakaunzwa naIngwersen (1998).
Zvechokwadi, shanduro yakaoma zvikuru yemutsara ndeyekuti "Chimwe chiyero chakananga chiri''Web Impact Factor''(WIF) inotsanangurwa naIngwersen muna 1998 sehuwandu hwemapeji ose ekubatanidza, akaparadzaniswa nenhamba yemapeji ewebhu akabudiswa panzvimbo ino inowanikwa kune crawler. "