TightWind is written by Kyle Baxter. Stay Hungry. Stay Foolish.

A Facebook user linked to a barrel of personal lubricant on Amazon because, well, who wouldn’t think a 55-gallon drum of lube is funny? And then this happened:

He found it irresistibly funny and, as one does in this age of instant sharing, he posted the link on Facebook, adding a comment: “For Valentine’s Day. And every day. For the rest of your life.”

Within days, friends of Mr. Bergus started seeing his post among the ads on Facebook pages, with his name and smiling mug shot. Facebook — or rather, one of its algorithms — had seen his post as an endorsement and transformed it into an advertisement, paid for by Amazon.

Innovation.