A picture fired off at the Twitter account of digital marketing company Synrgy prompted reports that Google is experimenting in the United States with "banner ads" atop results for searches targeting brands.
The move appeared to break a vow made about eight years ago by then Google executive Marissa Mayer, who is now chief of Yahoo.
"There will be no banner ads on the Google homepage of Web search results pages," Mayer said in a blog post that remained available online Wednesday.
"There will not be crazy, flashy, graphical doodads flying and popping up all over the Google site. Ever."
Synrgy reported that a Google search targeting Southwest Airlines delivered results topped with a large ad showing a promotional photo accompanied by links for reservations or other services at the company.
Technology news website Search Engine Land quoted a Google spokesman as confirming the banner ads were part of a "small test" taking place in the US market.
Google did not respond to AFP requests for comment.
Get your daily dose of tech news, reviews, and insights, in under 80 characters on Gadgets 360 Turbo. Connect with fellow tech lovers on our Forum. Follow us on X, Facebook, WhatsApp, Threads and Google News for instant updates. Catch all the action on our YouTube channel.