"21 Pictures That Will Restore Your Faith in Humanity," e.g.

• BuzzFeed fodder
• Piece with a title like "10 Best Places to ..."
• Brief enumeration
• "17 Things All Crossword Solvers Have Experienced," e.g
• "Top 10" blog post, say
• "7 Essential Leadership Lessons from Santa Claus," e.g

Wikipedia Word definitions in Wikipedia
In journalism and blogging , a listicle is a short-form of writing that uses a list as its thematic structure, but is fleshed out with sufficient copy to be published as an article . A typical listicle will prominently feature a cardinal number in its title, ...

Wiktionary Word definitions in Wiktionary
n. (cx informal English) An article based around a list.