This article focuses on practices of online content creation among young Internet users in Estonia. The data are derived from a questionnaire survey carried out in schools in 3 cities in autumn 2007 (N = 713) among 11- to 18-year-old students. Our findings suggest that content creation practices in more structured online environments such as social networking sites, forums and news portals are much more widespread than practices in less structured technical interfaces such as blogs and homepages. Cluster analysis brought out 6 types of young content creators. We conclude that active and versatile content creation in less structured online environments contributes more to advancing media literacies than participation in more structured technological interfaces does.