Since 2006, blogging has dropped among teens and young adults while simultaneously rising among older adults. As the tools and technology embedded in social networking sites change, and use of the sites continues to grow, youth may be exchanging "macro blogging" for microblogging with status updates. Blogging has declined in popularity among both teens and young adults since 2006. Blog commenting has also dropped among teens. This report brings together recent findings about internet and social media use among young adults by situating it within comparable data for adolescents and adults older than 30. All the most current data on teens is drawn from a survey the authors conducted between June 26 and September 24, 2009 of 800 adolescents between ages 12 and 17. Most of the adult data are drawn from a survey they conducted between August 18 and September 14, 2009 of 2,253 adults (age 18 and over). (Contains 2 tables and 13 footnotes.)