Happy Fourth of July to everyone!
To celebrate the Independence Day for the United States Google, Yahoo, Bing, Dogpile and Ask.com all have special logos and themes on their home pages. Just like they do every year, in fact, check out the past year logos for 2011, 2010, 2009, 2008, 2007, 2006, 2005 and 2004.
Here are the logos from the various search engines.
Search Engine Roundtable:
Forum discussion at Google Blogoscoped Forums.