As social-media sites like Facebook grow in popularity among teenagers and young adults, good ol' blogging has declined sharply over the past three years for this set, a new report shows.

In 2006, 28 percent of teens ages 12 to 17 and young adults ages 18 to 29 were bloggers, according to survey results released Wednesday by the Pew Research Center. By the fall of 2009, however, these numbers dropped to 14 percent of teens and 15 percent of young adults. During the same period, the percentage of online adults over 30 who are blogging rose from 7 percent in 2006 to 11 percent in 2009.

The survey attributed the decline in blogging among younger Internet users to changes in social network use. About three quarters (73 percent) of online teens and an equal number (72 percent) of young adults use social-networking sites such as Facebook or MySpace.

Source: CNET News