Going Viral on April Fool's Day

Once again, lots of businesses are making customers smile and getting brands to go viral through April Fool's Day stunts. For example:

• Think Geek is offering a gaming cabinet for your inner steam-punk. Or maybe you want to play Game of Thrones Clue? Either way, every April 1st brings fun on this geeky e-commerce site with a wicked sense of humor.
• Entrepreneur Sir Richard Branson, a long-time April Fool prankster, announced that his Virgin Group's US headquarters will move to Branson, MO. Read all about it and get a laugh here.
• Google is in on the joke with a variety of offerings, including elgooG. 
• The UK Guardian is in on the joke too.
• Amazon introduced its new Dash button for reordering household staple items just in time for April Fool's -- but turns out it's real, a clever twist on 4/1 marketing.