Teens don’t tweet; Twitter’s growth not fueled by youth

Nielsen researchers analyze data from the NetRatings panel of 250,000 U.S. Internet users and find that Twitter reached 10.7 percent of all active Internet users in June, but this growth has come despite a lack of widespread adoption by children, teens, and young adults. In June 2009, Twitter.com effectively under-indexes on the youth market by 36 percent. More data at NielsenWire.