Your Facebook Wall Just Got More Interesting Image Credit: Facebook Facebook's emoji-like stickers, which have been a hit in private and group messages, can now be used in wall posts, comments and events. The update is expected to be rolled out within the next day, according to Bob Baldwin, a Facebook engineer who worked on the project. If you're eager to try it out the update, just tap the smiley face icon in the bottom right of any comment field, choose your favorite sticker and post to your heart's content. Baldwin said the idea was born during a hackathon - and grew into a larger project after he saw how popular it was. "You can now easily show your excitement for a post with good news, cheer up a friend who's feeling down, and express a variety of more nuanced reactions," he said. Now, your stale old message of "let's do lunch" can be so much more interesting when paired with the smiling burger and fries sticker.