If you're an avid Bing user and have a birthday coming up, you may be in for a surprise. The search page will now wish you a happy birthday in big, bold letters, and even offer you a birthday cake to boot.
As noted on Twitter by @Dwane18, Bing will make quite the big deal out of your birthday, just in case you're hankering for some extra cheer. Presumably this requires you to be signed into your Microsoft account, as Microsoft isn't a mind reader (though Cortana knows all!). And while minor in the grand scheme of things, it's still pretty neat.
Alas, it's too bad that birthday cake is a digital one and not real, but at least you get to make a wish!
Source: @Dwayne18 (Twitter)