Graphs and paths: PageRank.
https://towardsdatascience.com/graphs-and-paths-pagerank-54f180a1aa0a
Imagine someone is searching the web️ to learn about their favorite celebrity.
There is an abundance of information about this person; tweets on Twtr, memorabilia on Amzn, articles on Medm, a fan page on Fb, and even a Mspc account.