Sometimes its just so nice to have clarity According to a new report from Social Media Today, if you want to reach the 18 to 24 age group, SnapChat should be your number one social site as it completely dominates this segment. 25 to 34-year olds rank Instagram as #1, ages 35 to 44 favor Pinterest, for 45 to 54 it is LinkedIN, and for 55+ it is Facebook. Who knew?!