Research shows that millennials love to use their smartphones to make purchases. Now data culled from a popular phone app reveals pizza is 18-34-year-olds' favorite buy.

CNNMoney cites the millennial mainstay Venmo, which the report describes as "like PayPal or checks for the 20-something crowd. Tech-savvy hipsters use the free app to transfer money to each other in seconds. Venmo, which was recently gobbled up by PayPal, requires users to include a message or an emoji to save time when they send money. The most frequently used emojis this summer were: New York: Taxi, Los Angeles: Pizza, San Francisco: Pizza, Chicago: Pizza, and Boston: Pizza.​

Read more about why boosting your online presence is the keystroke to pizzeria success.

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