Authors take note: Need some free publicity? Just wrangle some tarmac time with the president. After Arizona Gov. Jan Brewer’s finger-waving photo-op with President Obama became the 1,000-word story Thursday, people flocked to buy her book on Amazon.

(Haraz N. Ghanbari/AP)

During a post-State of the Union tour, Obama met Brewer when he arrived in Phoenix Wednesday. The two began a short, but tense conversation about Brewer’s depiction of an earlier meeting with the president in her book “Scorpions for Breakfast: My Fight Against Special Interests, Liberal Media, and Cynical Politicos to Secure the Border,’’”

A photograph that captured Brewer, finger outstretched, and the president made the tête-à-tête a national conversation — and Brewer’s book a hot selling item. Within 48 hours, her book jumped from No. 285,568 to No. 7 in the Amazon book rankings.

The book was published last November by Broadside Books, a section of HarperCollins that focuses on conservative nonfiction, Publisher’s Weekly reported.

On Thursday, Brewer said in an interview with KFYI radio that Obama “didn’t think I was very cordial. I said we’d have to agree to disagree. He was a little thin-skinned and tense, to say the least.”

In an interview with Barbara Walters, Obama dismissed the situation as “not a big deal.”

“I think it's always good publicity for a Republican if they're in an argument with me,” the president said.

That publicity helped the sales jump, as well as the reviews. The personal reviews on Amazon were crowded with one-star and five-star ratings, most added within the last day. One reader noted: “Twenty-two of the 33 one-star reviews were posted within the last two days. ... Did they read it earlier and forget to review it, suddenly remembering to do so two days ago, en masse?”

View Photo Gallery: The President and Arizona Gov. Jan Brewer (R) appeared to have a heated exchange. Here’s what you imagined they said to each other.