Image courtesy Wikimedia Commons.

Photo courtesy Charles Januzzi.

They mistook my politeness for friendship.

Courtesy image.

A polite manner is characteristic of Japanese people.

Photo courtesy of ISM

Courtesy Mohmmad Nabi. pic.twitter.com yFrS0gyJre Bilal Sarwary ( bsarwary) June 8, 2014

Image courtesy Novatv.mk

Photo courtesy of Solazyme.

Image courtesy Wikipedia.

Image courtesy Wikimedia.

Image courtesy Mikakuto.

Image courtesy of TJournal.ru.

Courtesy of Radio Tnn.

Image courtesy Kölner Karneval's Facebook page.

Learn Something Surprising About Africa, Courtesy of 'Africa Facts Zone' Global Voices

Photo courtesy Flickr user sanbu (CC BY NC 2.0)

Show a little courtesy!

Image courtesy Sana Jamal.

Photo courtesy Shohei Guccio.

Photo courtesy Vuk Visjnic

Image courtest UHA Mikakuto

Credit Courtesy of Tulip Mazumdar.

Photo courtesy of La Pública.

Photo courtesy Nevin Thompson

Photo courtesy Nevin Thompson.

Credit Courtesy of Nghiem Thuan.

I appreciate the courtesy.

Politeness is a much overlooked virtue.

Image courtesy NHK

Tracy Slater, courtesy the author.

Image courtesy Flickr user Sharon.

Credit Courtesy of Thu Thuy Truong.

Perhaps the best advice on all of this comes courtesy of Denis, though.

Screenshot courtesy Shingetsu News

Image courtesy his Facebook page

Courtesy Gabriela García Calderón Orbe

Image courtesy ka_bino and PR Works.

Photo courtesy of San Diego Zoo.

We have not had the courtesy of a reply.

Courtesy costs nothing.

Image courtesy of the Asian Football Confederation

Screenshot courtesy of joegoaukextra2 on Flickr

Photo courtesy Wikicommons Wikipedia user Aiden.

Photo courtesy Flickr user Jun Teramoto.