Cupcakes, the cost of digital projectors and more numbers we're watching today.

Share prices skyrocketed over rumors of a revived Crumbs Bake Shop.

Crumbs expanded quickly and even went public.

David Sax, author of "The Tastemakers", shatters illusions about the cupcake fad

Cupcake prices have dropped eight-tenths of a percent over the past year.

Baker Jennifer Longson runs one of a handful of retail businesses that accept bitcoins as payment. Where some see twin bubbles, she insists cupcakes or bitcoins are sticking around.

Sprinkles Cupcakes installs a robotic cupcake ATM.

A company in Rhode Island has come out with a TSA-safe cupcake in response to the incident last month where a cupcake was confiscated in an airport for its gel-like frosting.

Would you pay $4.50 for a fancy cupcake? How about $66 million for the Crumbs? Crumbs Bake Shop, the nation's largest cupcake chain, is going p…