Born between the mid-1990s and the mid-2000s, these young people want to be rich and famous.

Venmo is also better for targeting due to users' greater activity using apps and on mobile, per Zeotap's mobile data.

The average U.S. adult will spend 3 hours and 43 minutes per day on a mobile gadget this year, slightly more than the 3 hours and 35 minutes spent watching tv.

Mobile security firm Lookout said it discovered 238 separate apps carrying the ad plugin known as BeiTa. All of the apps were produced by mobile firm CooTek.