Today is Martin Luther King Jr. Day in the United States, and many of the search engines have special logos up for the day. Google has an artistic logo, with children drawing the face of Martin Luther King Jr. on a sidewalk. Ask.com illustrates their background with Martin Luther King Jr. speaking and pointing. Dogpile promotes a Food Drive with Martin Luther King Jr.’s picture in the background. Even the Search Engine Roundtable has a theme for the day. Yahoo does not have a logo on their home page, and neither does Live Search.
Here are larger logos: