(03-22) 13:47 PDT San Francisco-- They're cuddly, cartoonish expressions of love, sadness and anger, yet some serious science went into Facebook's messaging emoticons. Called Stickers, these ...

While Finch is the most scientific set, the other Sticker sets Facebook currently offers have varying degrees of emotion, according to Bejar. He’s eager to see how people respond to them.

Maybe you thought stickers were just things that were sticky and stuck to you. But check out some of the health claims made by the company Body Vibes on their web site about their stickers: Whoa ...

Tiny stickers called TapCaps allow the fingertips of gloves to use smartphone or tablet multitouch screens. The idea comes from Alice Ning's new Kickstarter project.