ASSOCIATED PRESS - Feb 12 - Young adults, ages 18 to 24, traditionally haven't been big online daters. Tinder and rivals such as Hinge are changing the dynamics. In 2013, only 10% in that age group used online dating. That rose to 27% in the latest Pew study. Tinder says half of its users are ages 18 to 24, while 85% are 18 to 34.