We still don’t know why, though…

“There are many more listicles of length 10 published compared to other numbers. This is primarily because BuzzFeed is selling the 10-length listicle to partner brands, such as the Michael J. Fox Show, Nordstrom Topman, and Buick. The second most popular length is 15, followed by 12. Listicle length drops off quite rapidly in the 20’s, although surprisingly, lengths 11-21 are far more popular than those under 10…

“If we look the bar chart by audience score we see a completely different picture?—?odd number length listicles… tend to have a higher audience score on average, where in our dataset, the number 29 tends to have an advantage over the rest.”