Some Twitter bots are spammy and obnoxious, with eggs for profile images and misspelled suggestions of ways to get rich quick. But not all Twitter bots are bad. Some are downright brilliant. And some, like the New York Public Library’s new emoji bot, are simply delightful.

Tweet an emoji at the library bot, and it replies just about instantly with a related image from the New York Public Library’s digital archives. A crying cat face emoji, for instance, might turn up a photo of adorable kittens….

Source: The New York Public Library’s new Twitter bot matches emoji with vintage photos from its digital archives — Quartz