THE ITHACAN - Nov 29 - SmileBack dating app is centered on sending anonymous smiles. The app became available to Ithaca College students in 2013 but seems to have grown in popularity recently. ~1K people in Ithaca, including Ithaca College and Cornell University students, are currently registered on SmileBack. SmileBack shows users 4 profiles in each 24-hour cycle. The user can send an anonymous smile to just one of the four people or choose none and wait for the next day when a new set of people are displayed. When users receive anonymous smiles, they have two guesses to determine who sent them. They can choose from five people, but only one is correct. If they get it right, they can choose to send a smile back or not. If they don't guess correctly, they must wait until the next day to send more smiles and make more guesses.