PageRank has revolutionized the whole Internet search society.
the lower-ranked nodes are mostly spelling errors such as Alanis Morisette and Christine Agulera, less known singers such as Buffy Sainte-Marie and Cece Winans, non-American singers such as Alejandro Sanz and France Gall, extractions due to part-of-speech tagging errors such as Billie Celebration, and general terms such as Peter and Sarah.