A 2012 Pew Research Center survey reveals that young adults, particularly those aged 18-29, are the most active demographic on social media platforms, with significant participation from women and urban residents. Facebook remains the most popular site among users, while platforms like Twitter, Pinterest, Instagram, and Tumblr see varying levels of engagement based on demographic factors such as age, race, and gender. The data indicates a growing trend in social media usage, highlighting differences in platform preference across different user groups.